Moved GL enums from GraphicsContext3D to a more generic location.

Source/core/html/canvas/WebGLRenderingContext.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 543 matching lines @@
     , m_onePlusMaxEnabledAttribIndex(0)
     , m_onePlusMaxNonDefaultTextureUnit(0)
 {
     ASSERT(m_context);
     ScriptWrappable::init(this);
 
     m_contextGroup = WebGLContextGroup::create();
     m_contextGroup->addContext(this);
 
     m_maxViewportDims[0] = m_maxViewportDims[1] = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_VIEWPORT_DIMS, m_maxViewportDims);
+    m_context->getIntegerv(GL_MAX_VIEWPORT_DIMS, m_maxViewportDims);
 
     RefPtr<WebGLRenderingContextEvictionManager> contextEvictionManager = adoptRef(new WebGLRenderingContextEvictionManager());
 
     // Create the DrawingBuffer and initialize the platform layer.
     DrawingBuffer::PreserveDrawingBuffer preserve = m_attributes.preserveDrawingBuffer ? DrawingBuffer::Preserve : DrawingBuffer::Discard;
     m_drawingBuffer = DrawingBuffer::create(m_context.get(), clampedCanvasSize(), preserve, contextEvictionManager.release());
 
     if (!m_drawingBuffer->isZeroSized()) {
         m_drawingBuffer->bind();
         setupFlags();
@@ skipping 31 matching lines @@
 void WebGLRenderingContext::initializeNewContext()
 {
     ASSERT(!isContextLost());
     m_needsUpdate = true;
     m_markedCanvasDirty = false;
     m_activeTextureUnit = 0;
     m_packAlignment = 4;
     m_unpackAlignment = 4;
     m_unpackFlipY = false;
     m_unpackPremultiplyAlpha = false;
-    m_unpackColorspaceConversion = GraphicsContext3D::BROWSER_DEFAULT_WEBGL;
+    m_unpackColorspaceConversion = GC3D_BROWSER_DEFAULT_WEBGL;
     m_boundArrayBuffer = 0;
     m_currentProgram = 0;
     m_framebufferBinding = 0;
     m_renderbufferBinding = 0;
     m_depthMask = true;
     m_stencilEnabled = false;
     m_stencilMask = 0xFFFFFFFF;
     m_stencilMaskBack = 0xFFFFFFFF;
     m_stencilFuncRef = 0;
     m_stencilFuncRefBack = 0;
     m_stencilFuncMask = 0xFFFFFFFF;
     m_stencilFuncMaskBack = 0xFFFFFFFF;
     m_layerCleared = false;
     m_numGLErrorsToConsoleAllowed = maxGLErrorsAllowedToConsole;
 
     m_clearColor[0] = m_clearColor[1] = m_clearColor[2] = m_clearColor[3] = 0;
     m_scissorEnabled = false;
     m_clearDepth = 1;
     m_clearStencil = 0;
     m_colorMask[0] = m_colorMask[1] = m_colorMask[2] = m_colorMask[3] = true;
 
     GC3Dint numCombinedTextureImageUnits = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &numCombinedTextureImageUnits);
+    m_context->getIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &numCombinedTextureImageUnits);
     m_textureUnits.clear();
     m_textureUnits.resize(numCombinedTextureImageUnits);
 
     GC3Dint numVertexAttribs = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &numVertexAttribs);
+    m_context->getIntegerv(GL_MAX_VERTEX_ATTRIBS, &numVertexAttribs);
     m_maxVertexAttribs = numVertexAttribs;
 
     m_maxTextureSize = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_TEXTURE_SIZE, &m_maxTextureSize);
+    m_context->getIntegerv(GL_MAX_TEXTURE_SIZE, &m_maxTextureSize);
     m_maxTextureLevel = WebGLTexture::computeLevelCount(m_maxTextureSize, m_maxTextureSize);
     m_maxCubeMapTextureSize = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_CUBE_MAP_TEXTURE_SIZE, &m_maxCubeMapTextureSize);
+    m_context->getIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &m_maxCubeMapTextureSize);
     m_maxCubeMapTextureLevel = WebGLTexture::computeLevelCount(m_maxCubeMapTextureSize, m_maxCubeMapTextureSize);
     m_maxRenderbufferSize = 0;
-    m_context->getIntegerv(GraphicsContext3D::MAX_RENDERBUFFER_SIZE, &m_maxRenderbufferSize);
+    m_context->getIntegerv(GL_MAX_RENDERBUFFER_SIZE, &m_maxRenderbufferSize);
 
     // These two values from EXT_draw_buffers are lazily queried.
     m_maxDrawBuffers = 0;
     m_maxColorAttachments = 0;
 
-    m_backDrawBuffer = GraphicsContext3D::BACK;
+    m_backDrawBuffer = GL_BACK;
 
     m_defaultVertexArrayObject = WebGLVertexArrayObjectOES::create(this, WebGLVertexArrayObjectOES::VaoTypeDefault);
     addContextObject(m_defaultVertexArrayObject.get());
     m_boundVertexArrayObject = m_defaultVertexArrayObject;
 
     m_vertexAttribValue.resize(m_maxVertexAttribs);
 
     createFallbackBlackTextures1x1();
 
     IntSize canvasSize = clampedCanvasSize();
@@ skipping 139 matching lines @@
 
     if (!m_context->layerComposited() || m_layerCleared
         || m_attributes.preserveDrawingBuffer || (mask && m_framebufferBinding))
         return false;
 
     RefPtr<WebGLContextAttributes> contextAttributes = getContextAttributes();
 
     // Determine if it's possible to combine the clear the user asked for and this clear.
     bool combinedClear = mask && !m_scissorEnabled;
 
-    m_context->disable(GraphicsContext3D::SCISSOR_TEST);
-    if (combinedClear && (mask & GraphicsContext3D::COLOR_BUFFER_BIT))
+    m_context->disable(GL_SCISSOR_TEST);
+    if (combinedClear && (mask & GL_COLOR_BUFFER_BIT))
         m_context->clearColor(m_colorMask[0] ? m_clearColor[0] : 0,
                               m_colorMask[1] ? m_clearColor[1] : 0,
                               m_colorMask[2] ? m_clearColor[2] : 0,
                               m_colorMask[3] ? m_clearColor[3] : 0);
     else
         m_context->clearColor(0, 0, 0, 0);
     m_context->colorMask(true, true, true, true);
-    GC3Dbitfield clearMask = GraphicsContext3D::COLOR_BUFFER_BIT;
+    GC3Dbitfield clearMask = GL_COLOR_BUFFER_BIT;
     if (contextAttributes->depth()) {
-        if (!combinedClear || !m_depthMask || !(mask & GraphicsContext3D::DEPTH_BUFFER_BIT))
+        if (!combinedClear || !m_depthMask || !(mask & GL_DEPTH_BUFFER_BIT))
             m_context->clearDepth(1.0f);
-        clearMask |= GraphicsContext3D::DEPTH_BUFFER_BIT;
+        clearMask |= GL_DEPTH_BUFFER_BIT;
         m_context->depthMask(true);
     }
     if (contextAttributes->stencil()) {
-        if (combinedClear && (mask & GraphicsContext3D::STENCIL_BUFFER_BIT))
+        if (combinedClear && (mask & GL_STENCIL_BUFFER_BIT))
             m_context->clearStencil(m_clearStencil & m_stencilMask);
         else
             m_context->clearStencil(0);
-        clearMask |= GraphicsContext3D::STENCIL_BUFFER_BIT;
-        m_context->stencilMaskSeparate(GraphicsContext3D::FRONT, 0xFFFFFFFF);
+        clearMask |= GL_STENCIL_BUFFER_BIT;
+        m_context->stencilMaskSeparate(GL_FRONT, 0xFFFFFFFF);
     }
 
     m_drawingBuffer->clearFramebuffers(clearMask);
 
     restoreStateAfterClear();
     if (m_framebufferBinding)
-        m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
+        m_context->bindFramebuffer(GL_FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
     m_layerCleared = true;
 
     return combinedClear;
 }
 
 void WebGLRenderingContext::restoreStateAfterClear()
 {
     if (isContextLost())
         return;
 
     // Restore the state that the context set.
     if (m_scissorEnabled)
-        m_context->enable(GraphicsContext3D::SCISSOR_TEST);
+        m_context->enable(GL_SCISSOR_TEST);
     m_context->clearColor(m_clearColor[0], m_clearColor[1],
                           m_clearColor[2], m_clearColor[3]);
     m_context->colorMask(m_colorMask[0], m_colorMask[1],
                          m_colorMask[2], m_colorMask[3]);
     m_context->clearDepth(m_clearDepth);
     m_context->clearStencil(m_clearStencil);
-    m_context->stencilMaskSeparate(GraphicsContext3D::FRONT, m_stencilMask);
+    m_context->stencilMaskSeparate(GL_FRONT, m_stencilMask);
     m_context->depthMask(m_depthMask);
 }
 
 void WebGLRenderingContext::markLayerComposited()
 {
     if (!isContextLost())
         m_context->markLayerComposited();
 }
 
 void WebGLRenderingContext::paintRenderingResultsToCanvas()
@@ skipping 20 matching lines @@
         return;
 
     canvas()->clearCopiedImage();
     m_markedCanvasDirty = false;
 
     m_drawingBuffer->commit();
     if (!(canvas()->buffer())->copyRenderingResultsFromDrawingBuffer(m_drawingBuffer.get()))
         m_context->paintRenderingResultsToCanvas(canvas()->buffer(), m_drawingBuffer.get());
 
     if (m_framebufferBinding)
-        m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
+        m_context->bindFramebuffer(GL_FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
     else
         m_drawingBuffer->bind();
 }
 
 PassRefPtr<ImageData> WebGLRenderingContext::paintRenderingResultsToImageData()
 {
     if (isContextLost())
         return 0;
 
     clearIfComposited();
     m_drawingBuffer->commit();
     int width, height;
     RefPtr<Uint8ClampedArray> imageDataPixels = m_context->paintRenderingResultsToImageData(m_drawingBuffer.get(), width, height);
     if (!imageDataPixels)
         return 0;
 
     if (m_framebufferBinding)
-        m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
+        m_context->bindFramebuffer(GL_FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
     else
         m_drawingBuffer->bind();
 
     return ImageData::create(IntSize(width, height), imageDataPixels);
 }
 
 void WebGLRenderingContext::reshape(int width, int height)
 {
     if (isContextLost())
         return;
@@ skipping 14 matching lines @@
         if (renderBox && renderBox->hasAcceleratedCompositing())
             renderBox->contentChanged(CanvasChanged);
         m_needsUpdate = false;
     }
 
     // We don't have to mark the canvas as dirty, since the newly created image buffer will also start off
     // clear (and this matches what reshape will do).
     m_drawingBuffer->reset(IntSize(width, height));
     restoreStateAfterClear();
 
-    m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, objectOrZero(m_textureUnits[m_activeTextureUnit].m_texture2DBinding.get()));
-    m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, objectOrZero(m_renderbufferBinding.get()));
+    m_context->bindTexture(GL_TEXTURE_2D, objectOrZero(m_textureUnits[m_activeTextureUnit].m_texture2DBinding.get()));
+    m_context->bindRenderbuffer(GL_RENDERBUFFER, objectOrZero(m_renderbufferBinding.get()));
     if (m_framebufferBinding)
-      m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
+        m_context->bindFramebuffer(GL_FRAMEBUFFER, objectOrZero(m_framebufferBinding.get()));
 }
 
 int WebGLRenderingContext::drawingBufferWidth() const
 {
     return m_drawingBuffer->size().width();
 }
 
 int WebGLRenderingContext::drawingBufferHeight() const
 {
     return m_drawingBuffer->size().height();
 }
 
 unsigned int WebGLRenderingContext::sizeInBytes(GC3Denum type)
 {
     switch (type) {
-    case GraphicsContext3D::BYTE:
+    case GL_BYTE:
         return sizeof(GC3Dbyte);
-    case GraphicsContext3D::UNSIGNED_BYTE:
+    case GL_UNSIGNED_BYTE:
         return sizeof(GC3Dubyte);
-    case GraphicsContext3D::SHORT:
+    case GL_SHORT:
         return sizeof(GC3Dshort);
-    case GraphicsContext3D::UNSIGNED_SHORT:
+    case GL_UNSIGNED_SHORT:
         return sizeof(GC3Dushort);
-    case GraphicsContext3D::INT:
+    case GL_INT:
         return sizeof(GC3Dint);
-    case GraphicsContext3D::UNSIGNED_INT:
+    case GL_UNSIGNED_INT:
         return sizeof(GC3Duint);
-    case GraphicsContext3D::FLOAT:
+    case GL_FLOAT:
         return sizeof(GC3Dfloat);
     }
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 void WebGLRenderingContext::activeTexture(GC3Denum texture)
 {
     if (isContextLost())
         return;
-    if (texture - GraphicsContext3D::TEXTURE0 >= m_textureUnits.size()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "activeTexture", "texture unit out of range");
+    if (texture - GL_TEXTURE0 >= m_textureUnits.size()) {
+        synthesizeGLError(GL_INVALID_ENUM, "activeTexture", "texture unit out of range");
         return;
     }
-    m_activeTextureUnit = texture - GraphicsContext3D::TEXTURE0;
+    m_activeTextureUnit = texture - GL_TEXTURE0;
     m_context->activeTexture(texture);
 
     m_drawingBuffer->setActiveTextureUnit(texture);
 
 }
 
 void WebGLRenderingContext::attachShader(WebGLProgram* program, WebGLShader* shader)
 {
     if (isContextLost() || !validateWebGLObject("attachShader", program) || !validateWebGLObject("attachShader", shader))
         return;
     if (!program->attachShader(shader)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "attachShader", "shader attachment already has shader");
+        synthesizeGLError(GL_INVALID_OPERATION, "attachShader", "shader attachment already has shader");
         return;
     }
     m_context->attachShader(objectOrZero(program), objectOrZero(shader));
     shader->onAttached();
 }
 
 void WebGLRenderingContext::bindAttribLocation(WebGLProgram* program, GC3Duint index, const String& name)
 {
     if (isContextLost() || !validateWebGLObject("bindAttribLocation", program))
         return;
     if (!validateLocationLength("bindAttribLocation", name))
         return;
     if (!validateString("bindAttribLocation", name))
         return;
     if (isPrefixReserved(name)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "bindAttribLocation", "reserved prefix");
+        synthesizeGLError(GL_INVALID_OPERATION, "bindAttribLocation", "reserved prefix");
         return;
     }
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bindAttribLocation", "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "bindAttribLocation", "index out of range");
         return;
     }
     m_context->bindAttribLocation(objectOrZero(program), index, name);
 }
 
 bool WebGLRenderingContext::checkObjectToBeBound(const char* functionName, WebGLObject* object, bool& deleted)
 {
     deleted = false;
     if (isContextLost())
         return false;
     if (object) {
         if (!object->validate(contextGroup(), this)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "object not from this context");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "object not from this context");
             return false;
         }
         deleted = !object->object();
     }
     return true;
 }
 
 void WebGLRenderingContext::bindBuffer(GC3Denum target, WebGLBuffer* buffer)
 {
     bool deleted;
     if (!checkObjectToBeBound("bindBuffer", buffer, deleted))
         return;
     if (deleted)
         buffer = 0;
     if (buffer && buffer->getTarget() && buffer->getTarget() != target) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "bindBuffer", "buffers can not be used with multiple targets");
+        synthesizeGLError(GL_INVALID_OPERATION, "bindBuffer", "buffers can not be used with multiple targets");
         return;
     }
-    if (target == GraphicsContext3D::ARRAY_BUFFER)
+    if (target == GL_ARRAY_BUFFER)
         m_boundArrayBuffer = buffer;
-    else if (target == GraphicsContext3D::ELEMENT_ARRAY_BUFFER)
+    else if (target == GL_ELEMENT_ARRAY_BUFFER)
         m_boundVertexArrayObject->setElementArrayBuffer(buffer);
     else {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindBuffer", "invalid target");
+        synthesizeGLError(GL_INVALID_ENUM, "bindBuffer", "invalid target");
         return;
     }
 
     m_context->bindBuffer(target, objectOrZero(buffer));
     if (buffer)
         buffer->setTarget(target);
 }
 
 void WebGLRenderingContext::bindFramebuffer(GC3Denum target, WebGLFramebuffer* buffer)
 {
     bool deleted;
     if (!checkObjectToBeBound("bindFramebuffer", buffer, deleted))
         return;
     if (deleted)
         buffer = 0;
-    if (target != GraphicsContext3D::FRAMEBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindFramebuffer", "invalid target");
+    if (target != GL_FRAMEBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "bindFramebuffer", "invalid target");
         return;
     }
     m_framebufferBinding = buffer;
     m_drawingBuffer->setFramebufferBinding(objectOrZero(m_framebufferBinding.get()));
     if (!m_framebufferBinding) {
         // Instead of binding fb 0, bind the drawing buffer.
         m_drawingBuffer->bind();
     } else
         m_context->bindFramebuffer(target, objectOrZero(buffer));
     if (buffer)
         buffer->setHasEverBeenBound();
     applyStencilTest();
 }
 
 void WebGLRenderingContext::bindRenderbuffer(GC3Denum target, WebGLRenderbuffer* renderBuffer)
 {
     bool deleted;
     if (!checkObjectToBeBound("bindRenderbuffer", renderBuffer, deleted))
         return;
     if (deleted)
         renderBuffer = 0;
-    if (target != GraphicsContext3D::RENDERBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindRenderbuffer", "invalid target");
+    if (target != GL_RENDERBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "bindRenderbuffer", "invalid target");
         return;
     }
     m_renderbufferBinding = renderBuffer;
     m_context->bindRenderbuffer(target, objectOrZero(renderBuffer));
     if (renderBuffer)
         renderBuffer->setHasEverBeenBound();
 }
 
 void WebGLRenderingContext::bindTexture(GC3Denum target, WebGLTexture* texture)
 {
     bool deleted;
     if (!checkObjectToBeBound("bindTexture", texture, deleted))
         return;
     if (deleted)
         texture = 0;
     if (texture && texture->getTarget() && texture->getTarget() != target) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "bindTexture", "textures can not be used with multiple targets");
+        synthesizeGLError(GL_INVALID_OPERATION, "bindTexture", "textures can not be used with multiple targets");
         return;
     }
     GC3Dint maxLevel = 0;
-    if (target == GraphicsContext3D::TEXTURE_2D) {
+    if (target == GL_TEXTURE_2D) {
         m_textureUnits[m_activeTextureUnit].m_texture2DBinding = texture;
         maxLevel = m_maxTextureLevel;
 
         if (!m_activeTextureUnit)
             m_drawingBuffer->setTexture2DBinding(objectOrZero(texture));
 
-    } else if (target == GraphicsContext3D::TEXTURE_CUBE_MAP) {
+    } else if (target == GL_TEXTURE_CUBE_MAP) {
         m_textureUnits[m_activeTextureUnit].m_textureCubeMapBinding = texture;
         maxLevel = m_maxCubeMapTextureLevel;
     } else {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindTexture", "invalid target");
+        synthesizeGLError(GL_INVALID_ENUM, "bindTexture", "invalid target");
         return;
     }
 
     m_context->bindTexture(target, objectOrZero(texture));
     if (texture) {
         texture->setTarget(target, maxLevel);
         m_onePlusMaxNonDefaultTextureUnit = max(m_activeTextureUnit + 1, m_onePlusMaxNonDefaultTextureUnit);
     } else {
         // If the disabled index is the current maximum, trace backwards to find the new max enabled texture index
         if (m_onePlusMaxNonDefaultTextureUnit == m_activeTextureUnit + 1) {
@@ skipping 50 matching lines @@
 }
 
 void WebGLRenderingContext::bufferData(GC3Denum target, long long size, GC3Denum usage)
 {
     if (isContextLost())
         return;
     WebGLBuffer* buffer = validateBufferDataParameters("bufferData", target, usage);
     if (!buffer)
         return;
     if (size < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "size < 0");
+        synthesizeGLError(GL_INVALID_VALUE, "bufferData", "size < 0");
         return;
     }
     if (!size) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "size == 0");
+        synthesizeGLError(GL_INVALID_VALUE, "bufferData", "size == 0");
         return;
     }
 
     m_context->bufferData(target, static_cast<GC3Dsizeiptr>(size), usage);
 }
 
 void WebGLRenderingContext::bufferData(GC3Denum target, ArrayBuffer* data, GC3Denum usage)
 {
     if (isContextLost())
         return;
     WebGLBuffer* buffer = validateBufferDataParameters("bufferData", target, usage);
     if (!buffer)
         return;
     if (!data) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "no data");
+        synthesizeGLError(GL_INVALID_VALUE, "bufferData", "no data");
         return;
     }
     m_context->bufferData(target, data->byteLength(), data->data(), usage);
 }
 
 void WebGLRenderingContext::bufferData(GC3Denum target, ArrayBufferView* data, GC3Denum usage)
 {
     if (isContextLost())
         return;
     WebGLBuffer* buffer = validateBufferDataParameters("bufferData", target, usage);
     if (!buffer)
         return;
     if (!data) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "no data");
+        synthesizeGLError(GL_INVALID_VALUE, "bufferData", "no data");
         return;
     }
 
     m_context->bufferData(target, data->byteLength(), data->baseAddress(), usage);
 }
 
 void WebGLRenderingContext::bufferSubData(GC3Denum target, long long offset, ArrayBuffer* data)
 {
     if (isContextLost())
         return;
-    WebGLBuffer* buffer = validateBufferDataParameters("bufferSubData", target, GraphicsContext3D::STATIC_DRAW);
+    WebGLBuffer* buffer = validateBufferDataParameters("bufferSubData", target, GL_STATIC_DRAW);
     if (!buffer)
         return;
     if (offset < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferSubData", "offset < 0");
+        synthesizeGLError(GL_INVALID_VALUE, "bufferSubData", "offset < 0");
         return;
     }
     if (!data)
         return;
 
     m_context->bufferSubData(target, static_cast<GC3Dintptr>(offset), data->byteLength(), data->data());
 }
 
 void WebGLRenderingContext::bufferSubData(GC3Denum target, long long offset, ArrayBufferView* data)
 {
     if (isContextLost())
         return;
-    WebGLBuffer* buffer = validateBufferDataParameters("bufferSubData", target, GraphicsContext3D::STATIC_DRAW);
+    WebGLBuffer* buffer = validateBufferDataParameters("bufferSubData", target, GL_STATIC_DRAW);
     if (!buffer)
         return;
     if (offset < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferSubData", "offset < 0");
+        synthesizeGLError(GL_INVALID_VALUE, "bufferSubData", "offset < 0");
         return;
     }
     if (!data)
         return;
 
     m_context->bufferSubData(target, static_cast<GC3Dintptr>(offset), data->byteLength(), data->baseAddress());
 }
 
 GC3Denum WebGLRenderingContext::checkFramebufferStatus(GC3Denum target)
 {
     if (isContextLost())
-        return GraphicsContext3D::FRAMEBUFFER_UNSUPPORTED;
-    if (target != GraphicsContext3D::FRAMEBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "checkFramebufferStatus", "invalid target");
+        return GL_FRAMEBUFFER_UNSUPPORTED;
+    if (target != GL_FRAMEBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "checkFramebufferStatus", "invalid target");
         return 0;
     }
     if (!m_framebufferBinding || !m_framebufferBinding->object())
-        return GraphicsContext3D::FRAMEBUFFER_COMPLETE;
+        return GL_FRAMEBUFFER_COMPLETE;
     const char* reason = "framebuffer incomplete";
     GC3Denum result = m_framebufferBinding->checkStatus(&reason);
-    if (result != GraphicsContext3D::FRAMEBUFFER_COMPLETE) {
+    if (result != GL_FRAMEBUFFER_COMPLETE) {
         emitGLWarning("checkFramebufferStatus", reason);
         return result;
     }
     result = m_context->checkFramebufferStatus(target);
     return result;
 }
 
 void WebGLRenderingContext::clear(GC3Dbitfield mask)
 {
     if (isContextLost())
         return;
-    if (mask & ~(GraphicsContext3D::COLOR_BUFFER_BIT | GraphicsContext3D::DEPTH_BUFFER_BIT | GraphicsContext3D::STENCIL_BUFFER_BIT)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "clear", "invalid mask");
+    if (mask & ~(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) {
+        synthesizeGLError(GL_INVALID_VALUE, "clear", "invalid mask");
         return;
     }
     const char* reason = "framebuffer incomplete";
     if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), &reason)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, "clear", reason);
+        synthesizeGLError(GL_INVALID_FRAMEBUFFER_OPERATION, "clear", reason);
         return;
     }
     if (!clearIfComposited(mask))
         m_context->clear(mask);
     markContextChanged();
 }
 
 void WebGLRenderingContext::clearColor(GC3Dfloat r, GC3Dfloat g, GC3Dfloat b, GC3Dfloat a)
 {
     if (isContextLost())
@@ skipping 49 matching lines @@
 
 void WebGLRenderingContext::compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width,
                                                  GC3Dsizei height, GC3Dint border, ArrayBufferView* data)
 {
     if (isContextLost())
         return;
     if (!validateTexFuncLevel("compressedTexImage2D", target, level))
         return;
 
     if (!validateCompressedTexFormat(internalformat)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "compressedTexImage2D", "invalid internalformat");
+        synthesizeGLError(GL_INVALID_ENUM, "compressedTexImage2D", "invalid internalformat");
         return;
     }
     if (border) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "compressedTexImage2D", "border not 0");
+        synthesizeGLError(GL_INVALID_VALUE, "compressedTexImage2D", "border not 0");
         return;
     }
     if (!validateCompressedTexDimensions("compressedTexImage2D", NotTexSubImage2D, target, level, width, height, internalformat))
         return;
     if (!validateCompressedTexFuncData("compressedTexImage2D", width, height, internalformat, data))
         return;
 
     WebGLTexture* tex = validateTextureBinding("compressedTexImage2D", target, true);
     if (!tex)
         return;
     if (!isGLES2NPOTStrict()) {
         if (level && WebGLTexture::isNPOT(width, height)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "compressedTexImage2D", "level > 0 not power of 2");
+            synthesizeGLError(GL_INVALID_VALUE, "compressedTexImage2D", "level > 0 not power of 2");
             return;
         }
     }
     graphicsContext3D()->compressedTexImage2D(target, level, internalformat, width, height,
                                               border, data->byteLength(), data->baseAddress());
-    tex->setLevelInfo(target, level, internalformat, width, height, GraphicsContext3D::UNSIGNED_BYTE);
+    tex->setLevelInfo(target, level, internalformat, width, height, GL_UNSIGNED_BYTE);
 }
 
 void WebGLRenderingContext::compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
                                                     GC3Dsizei width, GC3Dsizei height, GC3Denum format, ArrayBufferView* data)
 {
     if (isContextLost())
         return;
     if (!validateTexFuncLevel("compressedTexSubImage2D", target, level))
         return;
     if (!validateCompressedTexFormat(format)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "compressedTexSubImage2D", "invalid format");
+        synthesizeGLError(GL_INVALID_ENUM, "compressedTexSubImage2D", "invalid format");
         return;
     }
     if (!validateCompressedTexFuncData("compressedTexSubImage2D", width, height, format, data))
         return;
 
     WebGLTexture* tex = validateTextureBinding("compressedTexSubImage2D", target, true);
     if (!tex)
         return;
 
     if (format != tex->getInternalFormat(target, level)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "compressedTexSubImage2D", "format does not match texture format");
+        synthesizeGLError(GL_INVALID_OPERATION, "compressedTexSubImage2D", "format does not match texture format");
         return;
     }
 
     if (!validateCompressedTexSubDimensions("compressedTexSubImage2D", target, level, xoffset, yoffset, width, height, format, tex))
         return;
 
     graphicsContext3D()->compressedTexSubImage2D(target, level, xoffset, yoffset,
                                                  width, height, format, data->byteLength(), data->baseAddress());
 }
 
 bool WebGLRenderingContext::validateSettableTexFormat(const char* functionName, GC3Denum format)
 {
-    if (GraphicsContext3D::getClearBitsByFormat(format) & (GraphicsContext3D::DEPTH_BUFFER_BIT | GraphicsContext3D::STENCIL_BUFFER_BIT)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "format can not be set, only rendered to");
+    if (GraphicsContext3D::getClearBitsByFormat(format) & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) {
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "format can not be set, only rendered to");
         return false;
     }
     return true;
 }
 
 void WebGLRenderingContext::copyTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Dint border)
 {
     if (isContextLost())
         return;
-    if (!validateTexFuncParameters("copyTexImage2D", NotTexSubImage2D, target, level, internalformat, width, height, border, internalformat, GraphicsContext3D::UNSIGNED_BYTE))
+    if (!validateTexFuncParameters("copyTexImage2D", NotTexSubImage2D, target, level, internalformat, width, height, border, internalformat, GL_UNSIGNED_BYTE))
         return;
     if (!validateSettableTexFormat("copyTexImage2D", internalformat))
         return;
     WebGLTexture* tex = validateTextureBinding("copyTexImage2D", target, true);
     if (!tex)
         return;
     if (!isTexInternalFormatColorBufferCombinationValid(internalformat, boundFramebufferColorFormat())) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "copyTexImage2D", "framebuffer is incompatible format");
+        synthesizeGLError(GL_INVALID_OPERATION, "copyTexImage2D", "framebuffer is incompatible format");
         return;
     }
     if (!isGLES2NPOTStrict() && level && WebGLTexture::isNPOT(width, height)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "copyTexImage2D", "level > 0 not power of 2");
+        synthesizeGLError(GL_INVALID_VALUE, "copyTexImage2D", "level > 0 not power of 2");
         return;
     }
     const char* reason = "framebuffer incomplete";
     if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), &reason)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, "copyTexImage2D", reason);
+        synthesizeGLError(GL_INVALID_FRAMEBUFFER_OPERATION, "copyTexImage2D", reason);
         return;
     }
     clearIfComposited();
     ScopedDrawingBufferBinder binder(m_drawingBuffer.get(), m_framebufferBinding.get());
     m_context->copyTexImage2D(target, level, internalformat, x, y, width, height, border);
     // FIXME: if the framebuffer is not complete, none of the below should be executed.
-    tex->setLevelInfo(target, level, internalformat, width, height, GraphicsContext3D::UNSIGNED_BYTE);
+    tex->setLevelInfo(target, level, internalformat, width, height, GL_UNSIGNED_BYTE);
 }
 
 void WebGLRenderingContext::copyTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height)
 {
     if (isContextLost())
         return;
     if (!validateTexFuncLevel("copyTexSubImage2D", target, level))
         return;
     WebGLTexture* tex = validateTextureBinding("copyTexSubImage2D", target, true);
     if (!tex)
         return;
     if (!validateSize("copyTexSubImage2D", xoffset, yoffset) || !validateSize("copyTexSubImage2D", width, height))
         return;
     // Before checking if it is in the range, check if overflow happens first.
     if (xoffset + width < 0 || yoffset + height < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "copyTexSubImage2D", "bad dimensions");
+        synthesizeGLError(GL_INVALID_VALUE, "copyTexSubImage2D", "bad dimensions");
         return;
     }
     if (xoffset + width > tex->getWidth(target, level) || yoffset + height > tex->getHeight(target, level)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "copyTexSubImage2D", "rectangle out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "copyTexSubImage2D", "rectangle out of range");
         return;
     }
     GC3Denum internalformat = tex->getInternalFormat(target, level);
     if (!validateSettableTexFormat("copyTexSubImage2D", internalformat))
         return;
     if (!isTexInternalFormatColorBufferCombinationValid(internalformat, boundFramebufferColorFormat())) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "copyTexSubImage2D", "framebuffer is incompatible format");
+        synthesizeGLError(GL_INVALID_OPERATION, "copyTexSubImage2D", "framebuffer is incompatible format");
         return;
     }
     const char* reason = "framebuffer incomplete";
     if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), &reason)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, "copyTexSubImage2D", reason);
+        synthesizeGLError(GL_INVALID_FRAMEBUFFER_OPERATION, "copyTexSubImage2D", reason);
         return;
     }
     clearIfComposited();
     ScopedDrawingBufferBinder binder(m_drawingBuffer.get(), m_framebufferBinding.get());
     m_context->copyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height);
 }
 
 PassRefPtr<WebGLBuffer> WebGLRenderingContext::createBuffer()
 {
     if (isContextLost())
@@ skipping 48 matching lines @@
         m_context->bindRenderbuffer(target, objectOrZero(renderbuffer->emulatedStencilBuffer()));
         m_context->bindRenderbuffer(target, objectOrZero(m_renderbufferBinding.get()));
     }
     return renderbuffer->emulatedStencilBuffer();
 }
 
 PassRefPtr<WebGLShader> WebGLRenderingContext::createShader(GC3Denum type)
 {
     if (isContextLost())
         return 0;
-    if (type != GraphicsContext3D::VERTEX_SHADER && type != GraphicsContext3D::FRAGMENT_SHADER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "createShader", "invalid shader type");
+    if (type != GL_VERTEX_SHADER && type != GL_FRAGMENT_SHADER) {
+        synthesizeGLError(GL_INVALID_ENUM, "createShader", "invalid shader type");
         return 0;
     }
 
     RefPtr<WebGLShader> o = WebGLShader::create(this, type);
     addSharedObject(o.get());
     return o;
 }
 
 void WebGLRenderingContext::cullFace(GC3Denum mode)
 {
     if (isContextLost())
         return;
     switch (mode) {
-    case GraphicsContext3D::FRONT_AND_BACK:
-    case GraphicsContext3D::FRONT:
-    case GraphicsContext3D::BACK:
+    case GL_FRONT_AND_BACK:
+    case GL_FRONT:
+    case GL_BACK:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "cullFace", "invalid mode");
+        synthesizeGLError(GL_INVALID_ENUM, "cullFace", "invalid mode");
         return;
     }
     m_context->cullFace(mode);
 }
 
 bool WebGLRenderingContext::deleteObject(WebGLObject* object)
 {
     if (isContextLost() || !object)
         return false;
     if (!object->validate(contextGroup(), this)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "delete", "object does not belong to this context");
+        synthesizeGLError(GL_INVALID_OPERATION, "delete", "object does not belong to this context");
         return false;
     }
     if (object->object())
         // We need to pass in context here because we want
         // things in this context unbound.
         object->deleteObject(graphicsContext3D());
     return true;
 }
 
 void WebGLRenderingContext::deleteBuffer(WebGLBuffer* buffer)
@@ skipping 82 matching lines @@
         return;
     m_depthMask = flag;
     m_context->depthMask(flag);
 }
 
 void WebGLRenderingContext::depthRange(GC3Dfloat zNear, GC3Dfloat zFar)
 {
     if (isContextLost())
         return;
     if (zNear > zFar) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "depthRange", "zNear > zFar");
+        synthesizeGLError(GL_INVALID_OPERATION, "depthRange", "zNear > zFar");
         return;
     }
     m_context->depthRange(zNear, zFar);
 }
 
 void WebGLRenderingContext::detachShader(WebGLProgram* program, WebGLShader* shader)
 {
     if (isContextLost() || !validateWebGLObject("detachShader", program) || !validateWebGLObject("detachShader", shader))
         return;
     if (!program->detachShader(shader)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "detachShader", "shader not attached");
+        synthesizeGLError(GL_INVALID_OPERATION, "detachShader", "shader not attached");
         return;
     }
     m_context->detachShader(objectOrZero(program), objectOrZero(shader));
     shader->onDetached(graphicsContext3D());
 }
 
 void WebGLRenderingContext::disable(GC3Denum cap)
 {
     if (isContextLost() || !validateCapability("disable", cap))
         return;
-    if (cap == GraphicsContext3D::STENCIL_TEST) {
+    if (cap == GL_STENCIL_TEST) {
         m_stencilEnabled = false;
         applyStencilTest();
         return;
     }
-    if (cap == GraphicsContext3D::SCISSOR_TEST) {
+    if (cap == GL_SCISSOR_TEST) {
         m_scissorEnabled = false;
         m_drawingBuffer->setScissorEnabled(m_scissorEnabled);
     }
     m_context->disable(cap);
 }
 
 void WebGLRenderingContext::disableVertexAttribArray(GC3Duint index)
 {
     if (isContextLost())
         return;
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "disableVertexAttribArray", "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "disableVertexAttribArray", "index out of range");
         return;
     }
 
     WebGLVertexArrayObjectOES::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(index);
     state.enabled = false;
 
     // If the disabled index is the current maximum, trace backwards to find the new max enabled attrib index
     if (m_onePlusMaxEnabledAttribIndex == index + 1) {
         findNewMaxEnabledAttribIndex();
     }
@@ skipping 13 matching lines @@
             && (!state.bufferBinding || !state.bufferBinding->object()))
             return false;
     }
 
     return true;
 }
 
 bool WebGLRenderingContext::validateWebGLObject(const char* functionName, WebGLObject* object)
 {
     if (!object || !object->object()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no object or object deleted");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no object or object deleted");
         return false;
     }
     if (!object->validate(contextGroup(), this)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "object does not belong to this context");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "object does not belong to this context");
         return false;
     }
     return true;
 }
 
 void WebGLRenderingContext::drawArrays(GC3Denum mode, GC3Dint first, GC3Dsizei count)
 {
     if (!validateDrawArrays("drawArrays", mode, first, count))
         return;
 
@@ skipping 47 matching lines @@
     handleTextureCompleteness("drawElementsInstancedANGLE", true);
     m_context->extensions()->drawElementsInstancedANGLE(mode, count, type, static_cast<GC3Dintptr>(offset), primcount);
     handleTextureCompleteness("drawElementsInstancedANGLE", false);
     markContextChanged();
 }
 
 void WebGLRenderingContext::enable(GC3Denum cap)
 {
     if (isContextLost() || !validateCapability("enable", cap))
         return;
-    if (cap == GraphicsContext3D::STENCIL_TEST) {
+    if (cap == GL_STENCIL_TEST) {
         m_stencilEnabled = true;
         applyStencilTest();
         return;
     }
-    if (cap == GraphicsContext3D::SCISSOR_TEST) {
+    if (cap == GL_SCISSOR_TEST) {
         m_scissorEnabled = true;
         m_drawingBuffer->setScissorEnabled(m_scissorEnabled);
     }
     m_context->enable(cap);
 }
 
 void WebGLRenderingContext::enableVertexAttribArray(GC3Duint index)
 {
     if (isContextLost())
         return;
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "enableVertexAttribArray", "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "enableVertexAttribArray", "index out of range");
         return;
     }
 
     WebGLVertexArrayObjectOES::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(index);
     state.enabled = true;
 
     m_onePlusMaxEnabledAttribIndex = max(index + 1, m_onePlusMaxEnabledAttribIndex);
 
     m_context->enableVertexAttribArray(index);
 }
 
 void WebGLRenderingContext::finish()
 {
     if (isContextLost())
         return;
     m_context->flush(); // Intentionally a flush, not a finish.
 }
 
 void WebGLRenderingContext::flush()
 {
     if (isContextLost())
         return;
     m_context->flush();
 }
 
 void WebGLRenderingContext::framebufferRenderbuffer(GC3Denum target, GC3Denum attachment, GC3Denum renderbuffertarget, WebGLRenderbuffer* buffer)
 {
     if (isContextLost() || !validateFramebufferFuncParameters("framebufferRenderbuffer", target, attachment))
         return;
-    if (renderbuffertarget != GraphicsContext3D::RENDERBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "framebufferRenderbuffer", "invalid target");
+    if (renderbuffertarget != GL_RENDERBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "framebufferRenderbuffer", "invalid target");
         return;
     }
     if (buffer && !buffer->validate(contextGroup(), this)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferRenderbuffer", "no buffer or buffer not from this context");
+        synthesizeGLError(GL_INVALID_OPERATION, "framebufferRenderbuffer", "no buffer or buffer not from this context");
         return;
     }
     // Don't allow the default framebuffer to be mutated; all current
     // implementations use an FBO internally in place of the default
     // FBO.
     if (!m_framebufferBinding || !m_framebufferBinding->object()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferRenderbuffer", "no framebuffer bound");
+        synthesizeGLError(GL_INVALID_OPERATION, "framebufferRenderbuffer", "no framebuffer bound");
         return;
     }
     Platform3DObject bufferObject = objectOrZero(buffer);
     switch (attachment) {
-    case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT:
+    case GC3D_DEPTH_STENCIL_ATTACHMENT:
         if (isDepthStencilSupported() || !buffer) {
-            m_context->framebufferRenderbuffer(target, GraphicsContext3D::DEPTH_ATTACHMENT, renderbuffertarget, bufferObject);
-            m_context->framebufferRenderbuffer(target, GraphicsContext3D::STENCIL_ATTACHMENT, renderbuffertarget, bufferObject);
+            m_context->framebufferRenderbuffer(target, GL_DEPTH_ATTACHMENT, renderbuffertarget, bufferObject);
+            m_context->framebufferRenderbuffer(target, GL_STENCIL_ATTACHMENT, renderbuffertarget, bufferObject);
         } else {
             WebGLRenderbuffer* emulatedStencilBuffer = ensureEmulatedStencilBuffer(renderbuffertarget, buffer);
             if (!emulatedStencilBuffer) {
-                synthesizeGLError(GraphicsContext3D::OUT_OF_MEMORY, "framebufferRenderbuffer", "out of memory");
+                synthesizeGLError(GL_OUT_OF_MEMORY, "framebufferRenderbuffer", "out of memory");
                 return;
             }
-            m_context->framebufferRenderbuffer(target, GraphicsContext3D::DEPTH_ATTACHMENT, renderbuffertarget, bufferObject);
-            m_context->framebufferRenderbuffer(target, GraphicsContext3D::STENCIL_ATTACHMENT, renderbuffertarget, objectOrZero(emulatedStencilBuffer));
+            m_context->framebufferRenderbuffer(target, GL_DEPTH_ATTACHMENT, renderbuffertarget, bufferObject);
+            m_context->framebufferRenderbuffer(target, GL_STENCIL_ATTACHMENT, renderbuffertarget, objectOrZero(emulatedStencilBuffer));
         }
         break;
     default:
         m_context->framebufferRenderbuffer(target, attachment, renderbuffertarget, bufferObject);
     }
     m_framebufferBinding->setAttachmentForBoundFramebuffer(attachment, buffer);
     applyStencilTest();
 }
 
 void WebGLRenderingContext::framebufferTexture2D(GC3Denum target, GC3Denum attachment, GC3Denum textarget, WebGLTexture* texture, GC3Dint level)
 {
     if (isContextLost() || !validateFramebufferFuncParameters("framebufferTexture2D", target, attachment))
         return;
     if (level) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "framebufferTexture2D", "level not 0");
+        synthesizeGLError(GL_INVALID_VALUE, "framebufferTexture2D", "level not 0");
         return;
     }
     if (texture && !texture->validate(contextGroup(), this)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferTexture2D", "no texture or texture not from this context");
+        synthesizeGLError(GL_INVALID_OPERATION, "framebufferTexture2D", "no texture or texture not from this context");
         return;
     }
     // Don't allow the default framebuffer to be mutated; all current
     // implementations use an FBO internally in place of the default
     // FBO.
     if (!m_framebufferBinding || !m_framebufferBinding->object()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferTexture2D", "no framebuffer bound");
+        synthesizeGLError(GL_INVALID_OPERATION, "framebufferTexture2D", "no framebuffer bound");
         return;
     }
     Platform3DObject textureObject = objectOrZero(texture);
     switch (attachment) {
-    case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT:
-        m_context->framebufferTexture2D(target, GraphicsContext3D::DEPTH_ATTACHMENT, textarget, textureObject, level);
-        m_context->framebufferTexture2D(target, GraphicsContext3D::STENCIL_ATTACHMENT, textarget, textureObject, level);
+    case GC3D_DEPTH_STENCIL_ATTACHMENT:
+        m_context->framebufferTexture2D(target, GL_DEPTH_ATTACHMENT, textarget, textureObject, level);
+        m_context->framebufferTexture2D(target, GL_STENCIL_ATTACHMENT, textarget, textureObject, level);
         break;
-    case GraphicsContext3D::DEPTH_ATTACHMENT:
+    case GL_DEPTH_ATTACHMENT:
         m_context->framebufferTexture2D(target, attachment, textarget, textureObject, level);
         break;
-    case GraphicsContext3D::STENCIL_ATTACHMENT:
+    case GL_STENCIL_ATTACHMENT:
         m_context->framebufferTexture2D(target, attachment, textarget, textureObject, level);
         break;
     default:
         m_context->framebufferTexture2D(target, attachment, textarget, textureObject, level);
     }
     m_framebufferBinding->setAttachmentForBoundFramebuffer(attachment, textarget, texture, level);
     applyStencilTest();
 }
 
 void WebGLRenderingContext::frontFace(GC3Denum mode)
 {
     if (isContextLost())
         return;
     switch (mode) {
-    case GraphicsContext3D::CW:
-    case GraphicsContext3D::CCW:
+    case GL_CW:
+    case GL_CCW:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "frontFace", "invalid mode");
+        synthesizeGLError(GL_INVALID_ENUM, "frontFace", "invalid mode");
         return;
     }
     m_context->frontFace(mode);
 }
 
 void WebGLRenderingContext::generateMipmap(GC3Denum target)
 {
     if (isContextLost())
         return;
     WebGLTexture* tex = validateTextureBinding("generateMipmap", target, false);
     if (!tex)
         return;
     if (!tex->canGenerateMipmaps()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "generateMipmap", "level 0 not power of 2 or not all the same size");
+        synthesizeGLError(GL_INVALID_OPERATION, "generateMipmap", "level 0 not power of 2 or not all the same size");
         return;
     }
     if (!validateSettableTexFormat("generateMipmap", tex->getInternalFormat(target, 0)))
         return;
 
     // generateMipmap won't work properly if minFilter is not NEAREST_MIPMAP_LINEAR
     // on Mac.  Remove the hack once this driver bug is fixed.
 #if OS(MACOSX)
     bool needToResetMinFilter = false;
-    if (tex->getMinFilter() != GraphicsContext3D::NEAREST_MIPMAP_LINEAR) {
-        m_context->texParameteri(target, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::NEAREST_MIPMAP_LINEAR);
+    if (tex->getMinFilter() != GL_NEAREST_MIPMAP_LINEAR) {
+        m_context->texParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_LINEAR);
         needToResetMinFilter = true;
     }
 #endif
     m_context->generateMipmap(target);
 #if OS(MACOSX)
     if (needToResetMinFilter)
-        m_context->texParameteri(target, GraphicsContext3D::TEXTURE_MIN_FILTER, tex->getMinFilter());
+        m_context->texParameteri(target, GL_TEXTURE_MIN_FILTER, tex->getMinFilter());
 #endif
     tex->generateMipmapLevelInfo();
 }
 
 PassRefPtr<WebGLActiveInfo> WebGLRenderingContext::getActiveAttrib(WebGLProgram* program, GC3Duint index)
 {
     if (isContextLost() || !validateWebGLObject("getActiveAttrib", program))
         return 0;
     ActiveInfo info;
     if (!m_context->getActiveAttrib(objectOrZero(program), index, info))
@@ skipping 11 matching lines @@
     return WebGLActiveInfo::create(info.name, info.type, info.size);
 }
 
 bool WebGLRenderingContext::getAttachedShaders(WebGLProgram* program, Vector<RefPtr<WebGLShader> >& shaderObjects)
 {
     shaderObjects.clear();
     if (isContextLost() || !validateWebGLObject("getAttachedShaders", program))
         return false;
 
     const GC3Denum shaderType[] = {
-        GraphicsContext3D::VERTEX_SHADER,
-        GraphicsContext3D::FRAGMENT_SHADER
+        GL_VERTEX_SHADER,
+        GL_FRAGMENT_SHADER
     };
     for (unsigned i = 0; i < sizeof(shaderType) / sizeof(GC3Denum); ++i) {
         WebGLShader* shader = program->getAttachedShader(shaderType[i]);
         if (shader)
             shaderObjects.append(shader);
     }
     return true;
 }
 
 GC3Dint WebGLRenderingContext::getAttribLocation(WebGLProgram* program, const String& name)
 {
     if (isContextLost() || !validateWebGLObject("getAttribLocation", program))
         return -1;
     if (!validateLocationLength("getAttribLocation", name))
         return -1;
     if (!validateString("getAttribLocation", name))
         return -1;
     if (isPrefixReserved(name))
         return -1;
     if (!program->linkStatus()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getAttribLocation", "program not linked");
+        synthesizeGLError(GL_INVALID_OPERATION, "getAttribLocation", "program not linked");
         return 0;
     }
     return m_context->getAttribLocation(objectOrZero(program), name);
 }
 
 WebGLGetInfo WebGLRenderingContext::getBufferParameter(GC3Denum target, GC3Denum pname)
 {
     if (isContextLost())
         return WebGLGetInfo();
-    if (target != GraphicsContext3D::ARRAY_BUFFER && target != GraphicsContext3D::ELEMENT_ARRAY_BUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getBufferParameter", "invalid target");
+    if (target != GL_ARRAY_BUFFER && target != GL_ELEMENT_ARRAY_BUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "getBufferParameter", "invalid target");
         return WebGLGetInfo();
     }
 
-    if (pname != GraphicsContext3D::BUFFER_SIZE && pname != GraphicsContext3D::BUFFER_USAGE) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getBufferParameter", "invalid parameter name");
+    if (pname != GL_BUFFER_SIZE && pname != GL_BUFFER_USAGE) {
+        synthesizeGLError(GL_INVALID_ENUM, "getBufferParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 
     GC3Dint value = 0;
     m_context->getBufferParameteriv(target, pname, &value);
-    if (pname == GraphicsContext3D::BUFFER_SIZE)
+    if (pname == GL_BUFFER_SIZE)
         return WebGLGetInfo(value);
     return WebGLGetInfo(static_cast<unsigned int>(value));
 }
 
 PassRefPtr<WebGLContextAttributes> WebGLRenderingContext::getContextAttributes()
 {
     if (isContextLost())
         return 0;
     // We always need to return a new WebGLContextAttributes object to
     // prevent the user from mutating any cached version.
@@ skipping 14 matching lines @@
 
 GC3Denum WebGLRenderingContext::getError()
 {
     if (lost_context_errors_.size()) {
         GC3Denum err = lost_context_errors_.first();
         lost_context_errors_.remove(0);
         return err;
     }
 
     if (isContextLost())
-        return GraphicsContext3D::NO_ERROR;
+        return GL_NO_ERROR;
 
     return m_context->getError();
 }
 
 bool WebGLRenderingContext::ExtensionTracker::matchesNameWithPrefixes(const String& name) const
 {
     static const char* const unprefixed[] = { "", 0, };
 
     const char* const* prefixes = m_prefixes ? m_prefixes : unprefixed;
     for (; *prefixes; ++prefixes) {
@@ skipping 27 matching lines @@
 
     return 0;
 }
 
 WebGLGetInfo WebGLRenderingContext::getFramebufferAttachmentParameter(GC3Denum target, GC3Denum attachment, GC3Denum pname)
 {
     if (isContextLost() || !validateFramebufferFuncParameters("getFramebufferAttachmentParameter", target, attachment))
         return WebGLGetInfo();
 
     if (!m_framebufferBinding || !m_framebufferBinding->object()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getFramebufferAttachmentParameter", "no framebuffer bound");
+        synthesizeGLError(GL_INVALID_OPERATION, "getFramebufferAttachmentParameter", "no framebuffer bound");
         return WebGLGetInfo();
     }
 
     WebGLSharedObject* object = m_framebufferBinding->getAttachmentObject(attachment);
     if (!object) {
-        if (pname == GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE)
-            return WebGLGetInfo(GraphicsContext3D::NONE);
+        if (pname == GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE)
+            return WebGLGetInfo(GL_NONE);
         // OpenGL ES 2.0 specifies INVALID_ENUM in this case, while desktop GL
         // specifies INVALID_OPERATION.
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getFramebufferAttachmentParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getFramebufferAttachmentParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 
     ASSERT(object->isTexture() || object->isRenderbuffer());
     if (object->isTexture()) {
         switch (pname) {
-        case GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
-            return WebGLGetInfo(GraphicsContext3D::TEXTURE);
-        case GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
+        case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
+            return WebGLGetInfo(GL_TEXTURE);
+        case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
             return WebGLGetInfo(PassRefPtr<WebGLTexture>(static_cast<WebGLTexture*>(object)));
-        case GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL:
-        case GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE:
+        case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL:
+        case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE:
             {
                 GC3Dint value = 0;
                 m_context->getFramebufferAttachmentParameteriv(target, attachment, pname, &value);
                 return WebGLGetInfo(value);
             }
         default:
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getFramebufferAttachmentParameter", "invalid parameter name for texture attachment");
+            synthesizeGLError(GL_INVALID_ENUM, "getFramebufferAttachmentParameter", "invalid parameter name for texture attachment");
             return WebGLGetInfo();
         }
     } else {
         switch (pname) {
-        case GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
-            return WebGLGetInfo(GraphicsContext3D::RENDERBUFFER);
-        case GraphicsContext3D::FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
+        case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
+            return WebGLGetInfo(GL_RENDERBUFFER);
+        case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
             return WebGLGetInfo(PassRefPtr<WebGLRenderbuffer>(static_cast<WebGLRenderbuffer*>(object)));
         default:
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getFramebufferAttachmentParameter", "invalid parameter name for renderbuffer attachment");
+            synthesizeGLError(GL_INVALID_ENUM, "getFramebufferAttachmentParameter", "invalid parameter name for renderbuffer attachment");
             return WebGLGetInfo();
         }
     }
 }
 
 WebGLGetInfo WebGLRenderingContext::getParameter(GC3Denum pname)
 {
     if (isContextLost())
         return WebGLGetInfo();
     const int intZero = 0;
     switch (pname) {
-    case GraphicsContext3D::ACTIVE_TEXTURE:
+    case GL_ACTIVE_TEXTURE:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::ALIASED_LINE_WIDTH_RANGE:
+    case GL_ALIASED_LINE_WIDTH_RANGE:
         return getWebGLFloatArrayParameter(pname);
-    case GraphicsContext3D::ALIASED_POINT_SIZE_RANGE:
+    case GL_ALIASED_POINT_SIZE_RANGE:
         return getWebGLFloatArrayParameter(pname);
-    case GraphicsContext3D::ALPHA_BITS:
+    case GL_ALPHA_BITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::ARRAY_BUFFER_BINDING:
+    case GL_ARRAY_BUFFER_BINDING:
         return WebGLGetInfo(PassRefPtr<WebGLBuffer>(m_boundArrayBuffer));
-    case GraphicsContext3D::BLEND:
+    case GL_BLEND:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::BLEND_COLOR:
+    case GL_BLEND_COLOR:
         return getWebGLFloatArrayParameter(pname);
-    case GraphicsContext3D::BLEND_DST_ALPHA:
+    case GL_BLEND_DST_ALPHA:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::BLEND_DST_RGB:
+    case GL_BLEND_DST_RGB:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::BLEND_EQUATION_ALPHA:
+    case GL_BLEND_EQUATION_ALPHA:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::BLEND_EQUATION_RGB:
+    case GL_BLEND_EQUATION_RGB:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::BLEND_SRC_ALPHA:
+    case GL_BLEND_SRC_ALPHA:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::BLEND_SRC_RGB:
+    case GL_BLEND_SRC_RGB:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::BLUE_BITS:
+    case GL_BLUE_BITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::COLOR_CLEAR_VALUE:
+    case GL_COLOR_CLEAR_VALUE:
         return getWebGLFloatArrayParameter(pname);
-    case GraphicsContext3D::COLOR_WRITEMASK:
+    case GL_COLOR_WRITEMASK:
         return getBooleanArrayParameter(pname);
-    case GraphicsContext3D::COMPRESSED_TEXTURE_FORMATS:
+    case GL_COMPRESSED_TEXTURE_FORMATS:
         return WebGLGetInfo(Uint32Array::create(m_compressedTextureFormats.data(), m_compressedTextureFormats.size()));
-    case GraphicsContext3D::CULL_FACE:
+    case GL_CULL_FACE:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::CULL_FACE_MODE:
+    case GL_CULL_FACE_MODE:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::CURRENT_PROGRAM:
+    case GL_CURRENT_PROGRAM:
         return WebGLGetInfo(PassRefPtr<WebGLProgram>(m_currentProgram));
-    case GraphicsContext3D::DEPTH_BITS:
+    case GL_DEPTH_BITS:
         if (!m_framebufferBinding && !m_attributes.depth)
             return WebGLGetInfo(intZero);
         return getIntParameter(pname);
-    case GraphicsContext3D::DEPTH_CLEAR_VALUE:
+    case GL_DEPTH_CLEAR_VALUE:
         return getFloatParameter(pname);
-    case GraphicsContext3D::DEPTH_FUNC:
+    case GL_DEPTH_FUNC:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::DEPTH_RANGE:
+    case GL_DEPTH_RANGE:
         return getWebGLFloatArrayParameter(pname);
-    case GraphicsContext3D::DEPTH_TEST:
+    case GL_DEPTH_TEST:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::DEPTH_WRITEMASK:
+    case GL_DEPTH_WRITEMASK:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::DITHER:
+    case GL_DITHER:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::ELEMENT_ARRAY_BUFFER_BINDING:
+    case GL_ELEMENT_ARRAY_BUFFER_BINDING:
         return WebGLGetInfo(PassRefPtr<WebGLBuffer>(m_boundVertexArrayObject->boundElementArrayBuffer()));
-    case GraphicsContext3D::FRAMEBUFFER_BINDING:
+    case GL_FRAMEBUFFER_BINDING:
         return WebGLGetInfo(PassRefPtr<WebGLFramebuffer>(m_framebufferBinding));
-    case GraphicsContext3D::FRONT_FACE:
+    case GL_FRONT_FACE:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::GENERATE_MIPMAP_HINT:
+    case GL_GENERATE_MIPMAP_HINT:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::GREEN_BITS:
+    case GL_GREEN_BITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::LINE_WIDTH:
+    case GL_LINE_WIDTH:
         return getFloatParameter(pname);
-    case GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS:
+    case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_CUBE_MAP_TEXTURE_SIZE:
+    case GL_MAX_CUBE_MAP_TEXTURE_SIZE:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS:
+    case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_RENDERBUFFER_SIZE:
+    case GL_MAX_RENDERBUFFER_SIZE:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS:
+    case GL_MAX_TEXTURE_IMAGE_UNITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_TEXTURE_SIZE:
+    case GL_MAX_TEXTURE_SIZE:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_VARYING_VECTORS:
+    case GL_MAX_VARYING_VECTORS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_VERTEX_ATTRIBS:
+    case GL_MAX_VERTEX_ATTRIBS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS:
+    case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS:
+    case GL_MAX_VERTEX_UNIFORM_VECTORS:
         return getIntParameter(pname);
-    case GraphicsContext3D::MAX_VIEWPORT_DIMS:
+    case GL_MAX_VIEWPORT_DIMS:
         return getWebGLIntArrayParameter(pname);
-    case GraphicsContext3D::NUM_SHADER_BINARY_FORMATS:
+    case GL_NUM_SHADER_BINARY_FORMATS:
         // FIXME: should we always return 0 for this?
         return getIntParameter(pname);
-    case GraphicsContext3D::PACK_ALIGNMENT:
+    case GL_PACK_ALIGNMENT:
         return getIntParameter(pname);
-    case GraphicsContext3D::POLYGON_OFFSET_FACTOR:
+    case GL_POLYGON_OFFSET_FACTOR:
         return getFloatParameter(pname);
-    case GraphicsContext3D::POLYGON_OFFSET_FILL:
+    case GL_POLYGON_OFFSET_FILL:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::POLYGON_OFFSET_UNITS:
+    case GL_POLYGON_OFFSET_UNITS:
         return getFloatParameter(pname);
-    case GraphicsContext3D::RED_BITS:
+    case GL_RED_BITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::RENDERBUFFER_BINDING:
+    case GL_RENDERBUFFER_BINDING:
         return WebGLGetInfo(PassRefPtr<WebGLRenderbuffer>(m_renderbufferBinding));
-    case GraphicsContext3D::RENDERER:
+    case GL_RENDERER:
         return WebGLGetInfo(String("WebKit WebGL"));
-    case GraphicsContext3D::SAMPLE_BUFFERS:
+    case GL_SAMPLE_BUFFERS:
         return getIntParameter(pname);
-    case GraphicsContext3D::SAMPLE_COVERAGE_INVERT:
+    case GL_SAMPLE_COVERAGE_INVERT:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::SAMPLE_COVERAGE_VALUE:
+    case GL_SAMPLE_COVERAGE_VALUE:
         return getFloatParameter(pname);
-    case GraphicsContext3D::SAMPLES:
+    case GL_SAMPLES:
         return getIntParameter(pname);
-    case GraphicsContext3D::SCISSOR_BOX:
+    case GL_SCISSOR_BOX:
         return getWebGLIntArrayParameter(pname);
-    case GraphicsContext3D::SCISSOR_TEST:
+    case GL_SCISSOR_TEST:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::SHADING_LANGUAGE_VERSION:
-        return WebGLGetInfo("WebGL GLSL ES 1.0 (" + m_context->getString(GraphicsContext3D::SHADING_LANGUAGE_VERSION) + ")");
-    case GraphicsContext3D::STENCIL_BACK_FAIL:
+    case GL_SHADING_LANGUAGE_VERSION:
+        return WebGLGetInfo("WebGL GLSL ES 1.0 (" + m_context->getString(GL_SHADING_LANGUAGE_VERSION) + ")");
+    case GL_STENCIL_BACK_FAIL:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BACK_FUNC:
+    case GL_STENCIL_BACK_FUNC:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BACK_PASS_DEPTH_FAIL:
+    case GL_STENCIL_BACK_PASS_DEPTH_FAIL:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BACK_PASS_DEPTH_PASS:
+    case GL_STENCIL_BACK_PASS_DEPTH_PASS:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BACK_REF:
+    case GL_STENCIL_BACK_REF:
         return getIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BACK_VALUE_MASK:
+    case GL_STENCIL_BACK_VALUE_MASK:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BACK_WRITEMASK:
+    case GL_STENCIL_BACK_WRITEMASK:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_BITS:
+    case GL_STENCIL_BITS:
         if (!m_framebufferBinding && !m_attributes.stencil)
             return WebGLGetInfo(intZero);
         return getIntParameter(pname);
-    case GraphicsContext3D::STENCIL_CLEAR_VALUE:
+    case GL_STENCIL_CLEAR_VALUE:
         return getIntParameter(pname);
-    case GraphicsContext3D::STENCIL_FAIL:
+    case GL_STENCIL_FAIL:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_FUNC:
+    case GL_STENCIL_FUNC:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_PASS_DEPTH_FAIL:
+    case GL_STENCIL_PASS_DEPTH_FAIL:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_PASS_DEPTH_PASS:
+    case GL_STENCIL_PASS_DEPTH_PASS:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_REF:
+    case GL_STENCIL_REF:
         return getIntParameter(pname);
-    case GraphicsContext3D::STENCIL_TEST:
+    case GL_STENCIL_TEST:
         return getBooleanParameter(pname);
-    case GraphicsContext3D::STENCIL_VALUE_MASK:
+    case GL_STENCIL_VALUE_MASK:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::STENCIL_WRITEMASK:
+    case GL_STENCIL_WRITEMASK:
         return getUnsignedIntParameter(pname);
-    case GraphicsContext3D::SUBPIXEL_BITS:
+    case GL_SUBPIXEL_BITS:
         return getIntParameter(pname);
-    case GraphicsContext3D::TEXTURE_BINDING_2D:
+    case GL_TEXTURE_BINDING_2D:
         return WebGLGetInfo(PassRefPtr<WebGLTexture>(m_textureUnits[m_activeTextureUnit].m_texture2DBinding));
-    case GraphicsContext3D::TEXTURE_BINDING_CUBE_MAP:
+    case GL_TEXTURE_BINDING_CUBE_MAP:
         return WebGLGetInfo(PassRefPtr<WebGLTexture>(m_textureUnits[m_activeTextureUnit].m_textureCubeMapBinding));
-    case GraphicsContext3D::UNPACK_ALIGNMENT:
+    case GL_UNPACK_ALIGNMENT:
         return getIntParameter(pname);
-    case GraphicsContext3D::UNPACK_FLIP_Y_WEBGL:
+    case GC3D_UNPACK_FLIP_Y_WEBGL:
         return WebGLGetInfo(m_unpackFlipY);
-    case GraphicsContext3D::UNPACK_PREMULTIPLY_ALPHA_WEBGL:
+    case GC3D_UNPACK_PREMULTIPLY_ALPHA_WEBGL:
         return WebGLGetInfo(m_unpackPremultiplyAlpha);
-    case GraphicsContext3D::UNPACK_COLORSPACE_CONVERSION_WEBGL:
+    case GC3D_UNPACK_COLORSPACE_CONVERSION_WEBGL:
         return WebGLGetInfo(m_unpackColorspaceConversion);
-    case GraphicsContext3D::VENDOR:
+    case GL_VENDOR:
         return WebGLGetInfo(String("WebKit"));
-    case GraphicsContext3D::VERSION:
-        return WebGLGetInfo("WebGL 1.0 (" + m_context->getString(GraphicsContext3D::VERSION) + ")");
-    case GraphicsContext3D::VIEWPORT:
+    case GL_VERSION:
+        return WebGLGetInfo("WebGL 1.0 (" + m_context->getString(GL_VERSION) + ")");
+    case GL_VIEWPORT:
         return getWebGLIntArrayParameter(pname);
     case Extensions3D::FRAGMENT_SHADER_DERIVATIVE_HINT_OES: // OES_standard_derivatives
         if (m_oesStandardDerivatives)
             return getUnsignedIntParameter(Extensions3D::FRAGMENT_SHADER_DERIVATIVE_HINT_OES);
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, OES_standard_derivatives not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, OES_standard_derivatives not enabled");
         return WebGLGetInfo();
     case WebGLDebugRendererInfo::UNMASKED_RENDERER_WEBGL:
         if (m_webglDebugRendererInfo)
-            return WebGLGetInfo(m_context->getString(GraphicsContext3D::RENDERER));
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_debug_renderer_info not enabled");
+            return WebGLGetInfo(m_context->getString(GL_RENDERER));
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_debug_renderer_info not enabled");
         return WebGLGetInfo();
     case WebGLDebugRendererInfo::UNMASKED_VENDOR_WEBGL:
         if (m_webglDebugRendererInfo)
-            return WebGLGetInfo(m_context->getString(GraphicsContext3D::VENDOR));
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_debug_renderer_info not enabled");
+            return WebGLGetInfo(m_context->getString(GL_VENDOR));
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_debug_renderer_info not enabled");
         return WebGLGetInfo();
     case Extensions3D::VERTEX_ARRAY_BINDING_OES: // OES_vertex_array_object
         if (m_oesVertexArrayObject) {
             if (!m_boundVertexArrayObject->isDefaultObject())
                 return WebGLGetInfo(PassRefPtr<WebGLVertexArrayObjectOES>(m_boundVertexArrayObject));
             return WebGLGetInfo();
         }
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, OES_vertex_array_object not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, OES_vertex_array_object not enabled");
         return WebGLGetInfo();
     case Extensions3D::MAX_TEXTURE_MAX_ANISOTROPY_EXT: // EXT_texture_filter_anisotropic
         if (m_extTextureFilterAnisotropic)
             return getUnsignedIntParameter(Extensions3D::MAX_TEXTURE_MAX_ANISOTROPY_EXT);
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, EXT_texture_filter_anisotropic not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, EXT_texture_filter_anisotropic not enabled");
         return WebGLGetInfo();
     case Extensions3D::MAX_COLOR_ATTACHMENTS_EXT: // EXT_draw_buffers BEGIN
         if (m_webglDrawBuffers)
             return WebGLGetInfo(maxColorAttachments());
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_draw_buffers not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_draw_buffers not enabled");
         return WebGLGetInfo();
     case Extensions3D::MAX_DRAW_BUFFERS_EXT:
         if (m_webglDrawBuffers)
             return WebGLGetInfo(maxDrawBuffers());
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_draw_buffers not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name, WEBGL_draw_buffers not enabled");
         return WebGLGetInfo();
     default:
         if (m_webglDrawBuffers
             && pname >= Extensions3D::DRAW_BUFFER0_EXT
             && pname < static_cast<GC3Denum>(Extensions3D::DRAW_BUFFER0_EXT + maxDrawBuffers())) {
-            GC3Dint value = GraphicsContext3D::NONE;
+            GC3Dint value = GL_NONE;
             if (m_framebufferBinding)
                 value = m_framebufferBinding->getDrawBuffer(pname);
             else // emulated backbuffer
                 value = m_backDrawBuffer;
             return WebGLGetInfo(value);
         }
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 }
 
 WebGLGetInfo WebGLRenderingContext::getProgramParameter(WebGLProgram* program, GC3Denum pname)
 {
     if (isContextLost() || !validateWebGLObject("getProgramParameter", program))
         return WebGLGetInfo();
 
     GC3Dint value = 0;
     switch (pname) {
-    case GraphicsContext3D::DELETE_STATUS:
+    case GL_DELETE_STATUS:
         return WebGLGetInfo(program->isDeleted());
-    case GraphicsContext3D::VALIDATE_STATUS:
+    case GL_VALIDATE_STATUS:
         m_context->getProgramiv(objectOrZero(program), pname, &value);
         return WebGLGetInfo(static_cast<bool>(value));
-    case GraphicsContext3D::LINK_STATUS:
+    case GL_LINK_STATUS:
         return WebGLGetInfo(program->linkStatus());
-    case GraphicsContext3D::ATTACHED_SHADERS:
-    case GraphicsContext3D::ACTIVE_ATTRIBUTES:
-    case GraphicsContext3D::ACTIVE_UNIFORMS:
+    case GL_ATTACHED_SHADERS:
+    case GL_ACTIVE_ATTRIBUTES:
+    case GL_ACTIVE_UNIFORMS:
         m_context->getProgramiv(objectOrZero(program), pname, &value);
         return WebGLGetInfo(value);
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getProgramParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getProgramParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 }
 
 String WebGLRenderingContext::getProgramInfoLog(WebGLProgram* program)
 {
     if (isContextLost())
         return String();
     if (!validateWebGLObject("getProgramInfoLog", program))
         return "";
     return ensureNotNull(m_context->getProgramInfoLog(objectOrZero(program)));
 }
 
 WebGLGetInfo WebGLRenderingContext::getRenderbufferParameter(GC3Denum target, GC3Denum pname)
 {
     if (isContextLost())
         return WebGLGetInfo();
-    if (target != GraphicsContext3D::RENDERBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getRenderbufferParameter", "invalid target");
+    if (target != GL_RENDERBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "getRenderbufferParameter", "invalid target");
         return WebGLGetInfo();
     }
     if (!m_renderbufferBinding || !m_renderbufferBinding->object()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getRenderbufferParameter", "no renderbuffer bound");
+        synthesizeGLError(GL_INVALID_OPERATION, "getRenderbufferParameter", "no renderbuffer bound");
         return WebGLGetInfo();
     }
 
     GC3Dint value = 0;
     switch (pname) {
-    case GraphicsContext3D::RENDERBUFFER_WIDTH:
-    case GraphicsContext3D::RENDERBUFFER_HEIGHT:
-    case GraphicsContext3D::RENDERBUFFER_RED_SIZE:
-    case GraphicsContext3D::RENDERBUFFER_GREEN_SIZE:
-    case GraphicsContext3D::RENDERBUFFER_BLUE_SIZE:
-    case GraphicsContext3D::RENDERBUFFER_ALPHA_SIZE:
-    case GraphicsContext3D::RENDERBUFFER_DEPTH_SIZE:
+    case GL_RENDERBUFFER_WIDTH:
+    case GL_RENDERBUFFER_HEIGHT:
+    case GL_RENDERBUFFER_RED_SIZE:
+    case GL_RENDERBUFFER_GREEN_SIZE:
+    case GL_RENDERBUFFER_BLUE_SIZE:
+    case GL_RENDERBUFFER_ALPHA_SIZE:
+    case GL_RENDERBUFFER_DEPTH_SIZE:
         m_context->getRenderbufferParameteriv(target, pname, &value);
         return WebGLGetInfo(value);
-    case GraphicsContext3D::RENDERBUFFER_STENCIL_SIZE:
+    case GL_RENDERBUFFER_STENCIL_SIZE:
         if (m_renderbufferBinding->emulatedStencilBuffer()) {
             m_context->bindRenderbuffer(target, objectOrZero(m_renderbufferBinding->emulatedStencilBuffer()));
             m_context->getRenderbufferParameteriv(target, pname, &value);
             m_context->bindRenderbuffer(target, objectOrZero(m_renderbufferBinding.get()));
         } else {
             m_context->getRenderbufferParameteriv(target, pname, &value);
         }
         return WebGLGetInfo(value);
-    case GraphicsContext3D::RENDERBUFFER_INTERNAL_FORMAT:
+    case GL_RENDERBUFFER_INTERNAL_FORMAT:
         return WebGLGetInfo(m_renderbufferBinding->internalFormat());
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getRenderbufferParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getRenderbufferParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 }
 
 WebGLGetInfo WebGLRenderingContext::getShaderParameter(WebGLShader* shader, GC3Denum pname)
 {
     if (isContextLost() || !validateWebGLObject("getShaderParameter", shader))
         return WebGLGetInfo();
     GC3Dint value = 0;
     switch (pname) {
-    case GraphicsContext3D::DELETE_STATUS:
+    case GL_DELETE_STATUS:
         return WebGLGetInfo(shader->isDeleted());
-    case GraphicsContext3D::COMPILE_STATUS:
+    case GL_COMPILE_STATUS:
         m_context->getShaderiv(objectOrZero(shader), pname, &value);
         return WebGLGetInfo(static_cast<bool>(value));
-    case GraphicsContext3D::SHADER_TYPE:
+    case GL_SHADER_TYPE:
         m_context->getShaderiv(objectOrZero(shader), pname, &value);
         return WebGLGetInfo(static_cast<unsigned int>(value));
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getShaderParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getShaderParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 }
 
 String WebGLRenderingContext::getShaderInfoLog(WebGLShader* shader)
 {
     if (isContextLost())
         return String();
     if (!validateWebGLObject("getShaderInfoLog", shader))
         return "";
     return ensureNotNull(m_context->getShaderInfoLog(objectOrZero(shader)));
 }
 
 PassRefPtr<WebGLShaderPrecisionFormat> WebGLRenderingContext::getShaderPrecisionFormat(GC3Denum shaderType, GC3Denum precisionType)
 {
     if (isContextLost())
         return 0;
     switch (shaderType) {
-    case GraphicsContext3D::VERTEX_SHADER:
-    case GraphicsContext3D::FRAGMENT_SHADER:
+    case GL_VERTEX_SHADER:
+    case GL_FRAGMENT_SHADER:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getShaderPrecisionFormat", "invalid shader type");
+        synthesizeGLError(GL_INVALID_ENUM, "getShaderPrecisionFormat", "invalid shader type");
         return 0;
     }
     switch (precisionType) {
-    case GraphicsContext3D::LOW_FLOAT:
-    case GraphicsContext3D::MEDIUM_FLOAT:
-    case GraphicsContext3D::HIGH_FLOAT:
-    case GraphicsContext3D::LOW_INT:
-    case GraphicsContext3D::MEDIUM_INT:
-    case GraphicsContext3D::HIGH_INT:
+    case GL_LOW_FLOAT:
+    case GL_MEDIUM_FLOAT:
+    case GL_HIGH_FLOAT:
+    case GL_LOW_INT:
+    case GL_MEDIUM_INT:
+    case GL_HIGH_INT:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getShaderPrecisionFormat", "invalid precision type");
+        synthesizeGLError(GL_INVALID_ENUM, "getShaderPrecisionFormat", "invalid precision type");
         return 0;
     }
 
     GC3Dint range[2] = {0, 0};
     GC3Dint precision = 0;
     m_context->getShaderPrecisionFormat(shaderType, precisionType, range, &precision);
     return WebGLShaderPrecisionFormat::create(range[0], range[1], precision);
 }
 
 String WebGLRenderingContext::getShaderSource(WebGLShader* shader)
@@ skipping 28 matching lines @@
 
 WebGLGetInfo WebGLRenderingContext::getTexParameter(GC3Denum target, GC3Denum pname)
 {
     if (isContextLost())
         return WebGLGetInfo();
     WebGLTexture* tex = validateTextureBinding("getTexParameter", target, false);
     if (!tex)
         return WebGLGetInfo();
     GC3Dint value = 0;
     switch (pname) {
-    case GraphicsContext3D::TEXTURE_MAG_FILTER:
-    case GraphicsContext3D::TEXTURE_MIN_FILTER:
-    case GraphicsContext3D::TEXTURE_WRAP_S:
-    case GraphicsContext3D::TEXTURE_WRAP_T:
+    case GL_TEXTURE_MAG_FILTER:
+    case GL_TEXTURE_MIN_FILTER:
+    case GL_TEXTURE_WRAP_S:
+    case GL_TEXTURE_WRAP_T:
         m_context->getTexParameteriv(target, pname, &value);
         return WebGLGetInfo(static_cast<unsigned int>(value));
     case Extensions3D::TEXTURE_MAX_ANISOTROPY_EXT: // EXT_texture_filter_anisotropic
         if (m_extTextureFilterAnisotropic) {
             m_context->getTexParameteriv(target, pname, &value);
             return WebGLGetInfo(static_cast<unsigned int>(value));
         }
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getTexParameter", "invalid parameter name, EXT_texture_filter_anisotropic not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, "getTexParameter", "invalid parameter name, EXT_texture_filter_anisotropic not enabled");
         return WebGLGetInfo();
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getTexParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getTexParameter", "invalid parameter name");
         return WebGLGetInfo();
     }
 }
 
 WebGLGetInfo WebGLRenderingContext::getUniform(WebGLProgram* program, const WebGLUniformLocation* uniformLocation)
 {
     if (isContextLost() || !validateWebGLObject("getUniform", program))
         return WebGLGetInfo();
     if (!uniformLocation || uniformLocation->program() != program) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getUniform", "no uniformlocation or not valid for this program");
+        synthesizeGLError(GL_INVALID_OPERATION, "getUniform", "no uniformlocation or not valid for this program");
         return WebGLGetInfo();
     }
     GC3Dint location = uniformLocation->location();
 
     // FIXME: make this more efficient using WebGLUniformLocation and caching types in it
     GC3Dint activeUniforms = 0;
-    m_context->getProgramiv(objectOrZero(program), GraphicsContext3D::ACTIVE_UNIFORMS, &activeUniforms);
+    m_context->getProgramiv(objectOrZero(program), GL_ACTIVE_UNIFORMS, &activeUniforms);
     for (GC3Dint i = 0; i < activeUniforms; i++) {
         ActiveInfo info;
         if (!m_context->getActiveUniform(objectOrZero(program), i, info))
             return WebGLGetInfo();
         // Strip "[0]" from the name if it's an array.
         if (info.size > 1 && info.name.endsWith("[0]"))
             info.name = info.name.left(info.name.length() - 3);
         // If it's an array, we need to iterate through each element, appending "[index]" to the name.
         for (GC3Dint index = 0; index < info.size; ++index) {
             String name = info.name;
             if (info.size > 1 && index >= 1) {
                 name.append('[');
                 name.append(String::number(index));
                 name.append(']');
             }
             // Now need to look this up by name again to find its location
             GC3Dint loc = m_context->getUniformLocation(objectOrZero(program), name);
             if (loc == location) {
                 // Found it. Use the type in the ActiveInfo to determine the return type.
                 GC3Denum baseType;
                 unsigned int length;
                 switch (info.type) {
-                case GraphicsContext3D::BOOL:
-                    baseType = GraphicsContext3D::BOOL;
+                case GL_BOOL:
+                    baseType = GL_BOOL;
                     length = 1;
                     break;
-                case GraphicsContext3D::BOOL_VEC2:
-                    baseType = GraphicsContext3D::BOOL;
+                case GL_BOOL_VEC2:
+                    baseType = GL_BOOL;
                     length = 2;
                     break;
-                case GraphicsContext3D::BOOL_VEC3:
-                    baseType = GraphicsContext3D::BOOL;
+                case GL_BOOL_VEC3:
+                    baseType = GL_BOOL;
                     length = 3;
                     break;
-                case GraphicsContext3D::BOOL_VEC4:
-                    baseType = GraphicsContext3D::BOOL;
+                case GL_BOOL_VEC4:
+                    baseType = GL_BOOL;
                     length = 4;
                     break;
-                case GraphicsContext3D::INT:
-                    baseType = GraphicsContext3D::INT;
+                case GL_INT:
+                    baseType = GL_INT;
                     length = 1;
                     break;
-                case GraphicsContext3D::INT_VEC2:
-                    baseType = GraphicsContext3D::INT;
+                case GL_INT_VEC2:
+                    baseType = GL_INT;
                     length = 2;
                     break;
-                case GraphicsContext3D::INT_VEC3:
-                    baseType = GraphicsContext3D::INT;
+                case GL_INT_VEC3:
+                    baseType = GL_INT;
                     length = 3;
                     break;
-                case GraphicsContext3D::INT_VEC4:
-                    baseType = GraphicsContext3D::INT;
+                case GL_INT_VEC4:
+                    baseType = GL_INT;
                     length = 4;
                     break;
-                case GraphicsContext3D::FLOAT:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT:
+                    baseType = GL_FLOAT;
                     length = 1;
                     break;
-                case GraphicsContext3D::FLOAT_VEC2:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT_VEC2:
+                    baseType = GL_FLOAT;
                     length = 2;
                     break;
-                case GraphicsContext3D::FLOAT_VEC3:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT_VEC3:
+                    baseType = GL_FLOAT;
                     length = 3;
                     break;
-                case GraphicsContext3D::FLOAT_VEC4:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT_VEC4:
+                    baseType = GL_FLOAT;
                     length = 4;
                     break;
-                case GraphicsContext3D::FLOAT_MAT2:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT_MAT2:
+                    baseType = GL_FLOAT;
                     length = 4;
                     break;
-                case GraphicsContext3D::FLOAT_MAT3:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT_MAT3:
+                    baseType = GL_FLOAT;
                     length = 9;
                     break;
-                case GraphicsContext3D::FLOAT_MAT4:
-                    baseType = GraphicsContext3D::FLOAT;
+                case GL_FLOAT_MAT4:
+                    baseType = GL_FLOAT;
                     length = 16;
                     break;
-                case GraphicsContext3D::SAMPLER_2D:
-                case GraphicsContext3D::SAMPLER_CUBE:
-                    baseType = GraphicsContext3D::INT;
+                case GL_SAMPLER_2D:
+                case GL_SAMPLER_CUBE:
+                    baseType = GL_INT;
                     length = 1;
                     break;
                 default:
                     // Can't handle this type
-                    synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "getUniform", "unhandled type");
+                    synthesizeGLError(GL_INVALID_VALUE, "getUniform", "unhandled type");
                     return WebGLGetInfo();
                 }
                 switch (baseType) {
-                case GraphicsContext3D::FLOAT: {
+                case GL_FLOAT: {
                     GC3Dfloat value[16] = {0};
                     m_context->getUniformfv(objectOrZero(program), location, value);
                     if (length == 1)
                         return WebGLGetInfo(value[0]);
                     return WebGLGetInfo(Float32Array::create(value, length));
                 }
-                case GraphicsContext3D::INT: {
+                case GL_INT: {
                     GC3Dint value[4] = {0};
                     m_context->getUniformiv(objectOrZero(program), location, value);
                     if (length == 1)
                         return WebGLGetInfo(value[0]);
                     return WebGLGetInfo(Int32Array::create(value, length));
                 }
-                case GraphicsContext3D::BOOL: {
+                case GL_BOOL: {
                     GC3Dint value[4] = {0};
                     m_context->getUniformiv(objectOrZero(program), location, value);
                     if (length > 1) {
                         bool boolValue[16] = {0};
                         for (unsigned j = 0; j < length; j++)
                             boolValue[j] = static_cast<bool>(value[j]);
                         return WebGLGetInfo(boolValue, length);
                     }
                     return WebGLGetInfo(static_cast<bool>(value[0]));
                 }
                 default:
                     notImplemented();
                 }
             }
         }
     }
     // If we get here, something went wrong in our unfortunately complex logic above
-    synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "getUniform", "unknown error");
+    synthesizeGLError(GL_INVALID_VALUE, "getUniform", "unknown error");
     return WebGLGetInfo();
 }
 
 PassRefPtr<WebGLUniformLocation> WebGLRenderingContext::getUniformLocation(WebGLProgram* program, const String& name)
 {
     if (isContextLost() || !validateWebGLObject("getUniformLocation", program))
         return 0;
     if (!validateLocationLength("getUniformLocation", name))
         return 0;
     if (!validateString("getUniformLocation", name))
         return 0;
     if (isPrefixReserved(name))
         return 0;
     if (!program->linkStatus()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getUniformLocation", "program not linked");
+        synthesizeGLError(GL_INVALID_OPERATION, "getUniformLocation", "program not linked");
         return 0;
     }
     GC3Dint uniformLocation = m_context->getUniformLocation(objectOrZero(program), name);
     if (uniformLocation == -1)
         return 0;
     return WebGLUniformLocation::create(program, uniformLocation);
 }
 
 WebGLGetInfo WebGLRenderingContext::getVertexAttrib(GC3Duint index, GC3Denum pname)
 {
     if (isContextLost())
         return WebGLGetInfo();
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "getVertexAttrib", "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "getVertexAttrib", "index out of range");
         return WebGLGetInfo();
     }
     const WebGLVertexArrayObjectOES::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(index);
 
     if (m_angleInstancedArrays && pname == Extensions3D::VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE)
         return WebGLGetInfo(state.divisor);
 
     switch (pname) {
-    case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:
+    case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:
         if (!state.bufferBinding || !state.bufferBinding->object())
             return WebGLGetInfo();
         return WebGLGetInfo(PassRefPtr<WebGLBuffer>(state.bufferBinding));
-    case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_ENABLED:
+    case GL_VERTEX_ATTRIB_ARRAY_ENABLED:
         return WebGLGetInfo(state.enabled);
-    case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_NORMALIZED:
+    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:
         return WebGLGetInfo(state.normalized);
-    case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_SIZE:
+    case GL_VERTEX_ATTRIB_ARRAY_SIZE:
         return WebGLGetInfo(state.size);
-    case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_STRIDE:
+    case GL_VERTEX_ATTRIB_ARRAY_STRIDE:
         return WebGLGetInfo(state.originalStride);
-    case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_TYPE:
+    case GL_VERTEX_ATTRIB_ARRAY_TYPE:
         return WebGLGetInfo(state.type);
-    case GraphicsContext3D::CURRENT_VERTEX_ATTRIB:
+    case GL_CURRENT_VERTEX_ATTRIB:
         return WebGLGetInfo(Float32Array::create(m_vertexAttribValue[index].value, 4));
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getVertexAttrib", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "getVertexAttrib", "invalid parameter name");
         return WebGLGetInfo();
     }
 }
 
 long long WebGLRenderingContext::getVertexAttribOffset(GC3Duint index, GC3Denum pname)
 {
     if (isContextLost())
         return 0;
-    if (pname != GraphicsContext3D::VERTEX_ATTRIB_ARRAY_POINTER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getVertexAttribOffset", "invalid parameter name");
+    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER) {
+        synthesizeGLError(GL_INVALID_ENUM, "getVertexAttribOffset", "invalid parameter name");
         return 0;
     }
     GC3Dsizeiptr result = m_context->getVertexAttribOffset(index, pname);
     return static_cast<long long>(result);
 }
 
 void WebGLRenderingContext::hint(GC3Denum target, GC3Denum mode)
 {
     if (isContextLost())
         return;
     bool isValid = false;
     switch (target) {
-    case GraphicsContext3D::GENERATE_MIPMAP_HINT:
+    case GL_GENERATE_MIPMAP_HINT:
         isValid = true;
         break;
     case Extensions3D::FRAGMENT_SHADER_DERIVATIVE_HINT_OES: // OES_standard_derivatives
         if (m_oesStandardDerivatives)
             isValid = true;
         break;
     }
     if (!isValid) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "hint", "invalid target");
+        synthesizeGLError(GL_INVALID_ENUM, "hint", "invalid target");
         return;
     }
     m_context->hint(target, mode);
 }
 
 GC3Dboolean WebGLRenderingContext::isBuffer(WebGLBuffer* buffer)
 {
     if (!buffer || isContextLost())
         return 0;
 
     if (!buffer->hasEverBeenBound())
         return 0;
 
     return m_context->isBuffer(buffer->object());
 }
 
 bool WebGLRenderingContext::isContextLost()
 {
     return m_contextLost;
 }
 
 GC3Dboolean WebGLRenderingContext::isEnabled(GC3Denum cap)
 {
     if (isContextLost() || !validateCapability("isEnabled", cap))
         return 0;
-    if (cap == GraphicsContext3D::STENCIL_TEST)
+    if (cap == GL_STENCIL_TEST)
         return m_stencilEnabled;
     return m_context->isEnabled(cap);
 }
 
 GC3Dboolean WebGLRenderingContext::isFramebuffer(WebGLFramebuffer* framebuffer)
 {
     if (!framebuffer || isContextLost())
         return 0;
 
     if (!framebuffer->hasEverBeenBound())
@@ skipping 54 matching lines @@
 
     m_context->linkProgram(objectOrZero(program));
     program->increaseLinkCount();
 }
 
 void WebGLRenderingContext::pixelStorei(GC3Denum pname, GC3Dint param)
 {
     if (isContextLost())
         return;
     switch (pname) {
-    case GraphicsContext3D::UNPACK_FLIP_Y_WEBGL:
+    case GC3D_UNPACK_FLIP_Y_WEBGL:
         m_unpackFlipY = param;
         break;
-    case GraphicsContext3D::UNPACK_PREMULTIPLY_ALPHA_WEBGL:
+    case GC3D_UNPACK_PREMULTIPLY_ALPHA_WEBGL:
         m_unpackPremultiplyAlpha = param;
         break;
-    case GraphicsContext3D::UNPACK_COLORSPACE_CONVERSION_WEBGL:
-        if (param == GraphicsContext3D::BROWSER_DEFAULT_WEBGL || param == GraphicsContext3D::NONE)
+    case GC3D_UNPACK_COLORSPACE_CONVERSION_WEBGL:
+        if (param == GC3D_BROWSER_DEFAULT_WEBGL || param == GL_NONE)
             m_unpackColorspaceConversion = static_cast<GC3Denum>(param);
         else {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "pixelStorei", "invalid parameter for UNPACK_COLORSPACE_CONVERSION_WEBGL");
+            synthesizeGLError(GL_INVALID_VALUE, "pixelStorei", "invalid parameter for UNPACK_COLORSPACE_CONVERSION_WEBGL");
             return;
         }
         break;
-    case GraphicsContext3D::PACK_ALIGNMENT:
-    case GraphicsContext3D::UNPACK_ALIGNMENT:
+    case GL_PACK_ALIGNMENT:
+    case GL_UNPACK_ALIGNMENT:
         if (param == 1 || param == 2 || param == 4 || param == 8) {
-            if (pname == GraphicsContext3D::PACK_ALIGNMENT)
+            if (pname == GL_PACK_ALIGNMENT)
                 m_packAlignment = param;
-            else // GraphicsContext3D::UNPACK_ALIGNMENT:
+            else // GL_UNPACK_ALIGNMENT:
                 m_unpackAlignment = param;
             m_context->pixelStorei(pname, param);
         } else {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "pixelStorei", "invalid parameter for alignment");
+            synthesizeGLError(GL_INVALID_VALUE, "pixelStorei", "invalid parameter for alignment");
             return;
         }
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "pixelStorei", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "pixelStorei", "invalid parameter name");
         return;
     }
 }
 
 void WebGLRenderingContext::polygonOffset(GC3Dfloat factor, GC3Dfloat units)
 {
     if (isContextLost())
         return;
     m_context->polygonOffset(factor, units);
 }
 
 void WebGLRenderingContext::readPixels(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, ArrayBufferView* pixels)
 {
     if (isContextLost())
         return;
     // Due to WebGL's same-origin restrictions, it is not possible to
     // taint the origin using the WebGL API.
     ASSERT(canvas()->originClean());
     // Validate input parameters.
     if (!pixels) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "readPixels", "no destination ArrayBufferView");
+        synthesizeGLError(GL_INVALID_VALUE, "readPixels", "no destination ArrayBufferView");
         return;
     }
     switch (format) {
-    case GraphicsContext3D::ALPHA:
-    case GraphicsContext3D::RGB:
-    case GraphicsContext3D::RGBA:
+    case GL_ALPHA:
+    case GL_RGB:
+    case GL_RGBA:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "readPixels", "invalid format");
+        synthesizeGLError(GL_INVALID_ENUM, "readPixels", "invalid format");
         return;
     }
     switch (type) {
-    case GraphicsContext3D::UNSIGNED_BYTE:
-    case GraphicsContext3D::UNSIGNED_SHORT_5_6_5:
-    case GraphicsContext3D::UNSIGNED_SHORT_4_4_4_4:
-    case GraphicsContext3D::UNSIGNED_SHORT_5_5_5_1:
+    case GL_UNSIGNED_BYTE:
+    case GL_UNSIGNED_SHORT_5_6_5:
+    case GL_UNSIGNED_SHORT_4_4_4_4:
+    case GL_UNSIGNED_SHORT_5_5_5_1:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "readPixels", "invalid type");
+        synthesizeGLError(GL_INVALID_ENUM, "readPixels", "invalid type");
         return;
     }
-    if (format != GraphicsContext3D::RGBA || type != GraphicsContext3D::UNSIGNED_BYTE) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "readPixels", "format not RGBA or type not UNSIGNED_BYTE");
+    if (format != GL_RGBA || type != GL_UNSIGNED_BYTE) {
+        synthesizeGLError(GL_INVALID_OPERATION, "readPixels", "format not RGBA or type not UNSIGNED_BYTE");
         return;
     }
     // Validate array type against pixel type.
     if (pixels->getType() != ArrayBufferView::TypeUint8) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "readPixels", "ArrayBufferView not Uint8Array");
+        synthesizeGLError(GL_INVALID_OPERATION, "readPixels", "ArrayBufferView not Uint8Array");
         return;
     }
     const char* reason = "framebuffer incomplete";
     if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), &reason)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, "readPixels", reason);
+        synthesizeGLError(GL_INVALID_FRAMEBUFFER_OPERATION, "readPixels", reason);
         return;
     }
     // Calculate array size, taking into consideration of PACK_ALIGNMENT.
     unsigned int totalBytesRequired = 0;
     unsigned int padding = 0;
     GC3Denum error = m_context->computeImageSizeInBytes(format, type, width, height, m_packAlignment, &totalBytesRequired, &padding);
-    if (error != GraphicsContext3D::NO_ERROR) {
+    if (error != GL_NO_ERROR) {
         synthesizeGLError(error, "readPixels", "invalid dimensions");
         return;
     }
     if (pixels->byteLength() < totalBytesRequired) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "readPixels", "ArrayBufferView not large enough for dimensions");
+        synthesizeGLError(GL_INVALID_OPERATION, "readPixels", "ArrayBufferView not large enough for dimensions");
         return;
     }
 
     clearIfComposited();
     void* data = pixels->baseAddress();
 
     {
         ScopedDrawingBufferBinder binder(m_drawingBuffer.get(), m_framebufferBinding.get());
         m_context->readPixels(x, y, width, height, format, type, data);
     }
@@ skipping 11 matching lines @@
             pixels += padding;
         }
     }
 #endif
 }
 
 void WebGLRenderingContext::renderbufferStorage(GC3Denum target, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height)
 {
     if (isContextLost())
         return;
-    if (target != GraphicsContext3D::RENDERBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "renderbufferStorage", "invalid target");
+    if (target != GL_RENDERBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, "renderbufferStorage", "invalid target");
         return;
     }
     if (!m_renderbufferBinding || !m_renderbufferBinding->object()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "renderbufferStorage", "no bound renderbuffer");
+        synthesizeGLError(GL_INVALID_OPERATION, "renderbufferStorage", "no bound renderbuffer");
         return;
     }
     if (!validateSize("renderbufferStorage", width, height))
         return;
     switch (internalformat) {
-    case GraphicsContext3D::DEPTH_COMPONENT16:
-    case GraphicsContext3D::RGBA4:
-    case GraphicsContext3D::RGB5_A1:
-    case GraphicsContext3D::RGB565:
-    case GraphicsContext3D::STENCIL_INDEX8:
+    case GL_DEPTH_COMPONENT16:
+    case GL_RGBA4:
+    case GL_RGB5_A1:
+    case GL_RGB565:
+    case GL_STENCIL_INDEX8:
         m_context->renderbufferStorage(target, internalformat, width, height);
         m_renderbufferBinding->setInternalFormat(internalformat);
         m_renderbufferBinding->setSize(width, height);
         m_renderbufferBinding->deleteEmulatedStencilBuffer(m_context.get());
         break;
-    case GraphicsContext3D::DEPTH_STENCIL:
+    case GL_DEPTH_STENCIL_OES:
         if (isDepthStencilSupported()) {
             m_context->renderbufferStorage(target, Extensions3D::DEPTH24_STENCIL8, width, height);
         } else {
             WebGLRenderbuffer* emulatedStencilBuffer = ensureEmulatedStencilBuffer(target, m_renderbufferBinding.get());
             if (!emulatedStencilBuffer) {
-                synthesizeGLError(GraphicsContext3D::OUT_OF_MEMORY, "renderbufferStorage", "out of memory");
+                synthesizeGLError(GL_OUT_OF_MEMORY, "renderbufferStorage", "out of memory");
                 return;
             }
-            m_context->renderbufferStorage(target, GraphicsContext3D::DEPTH_COMPONENT16, width, height);
+            m_context->renderbufferStorage(target, GL_DEPTH_COMPONENT16, width, height);
             m_context->bindRenderbuffer(target, objectOrZero(emulatedStencilBuffer));
-            m_context->renderbufferStorage(target, GraphicsContext3D::STENCIL_INDEX8, width, height);
+            m_context->renderbufferStorage(target, GL_STENCIL_INDEX8, width, height);
             m_context->bindRenderbuffer(target, objectOrZero(m_renderbufferBinding.get()));
             emulatedStencilBuffer->setSize(width, height);
-            emulatedStencilBuffer->setInternalFormat(GraphicsContext3D::STENCIL_INDEX8);
+            emulatedStencilBuffer->setInternalFormat(GL_STENCIL_INDEX8);
         }
         m_renderbufferBinding->setSize(width, height);
         m_renderbufferBinding->setInternalFormat(internalformat);
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "renderbufferStorage", "invalid internalformat");
+        synthesizeGLError(GL_INVALID_ENUM, "renderbufferStorage", "invalid internalformat");
         return;
     }
     applyStencilTest();
 }
 
 void WebGLRenderingContext::sampleCoverage(GC3Dfloat value, GC3Dboolean invert)
 {
     if (isContextLost())
         return;
     m_context->sampleCoverage(value, invert);
@@ skipping 32 matching lines @@
     m_context->stencilFunc(func, ref, mask);
 }
 
 void WebGLRenderingContext::stencilFuncSeparate(GC3Denum face, GC3Denum func, GC3Dint ref, GC3Duint mask)
 {
     if (isContextLost())
         return;
     if (!validateStencilOrDepthFunc("stencilFuncSeparate", func))
         return;
     switch (face) {
-    case GraphicsContext3D::FRONT_AND_BACK:
+    case GL_FRONT_AND_BACK:
         m_stencilFuncRef = ref;
         m_stencilFuncRefBack = ref;
         m_stencilFuncMask = mask;
         m_stencilFuncMaskBack = mask;
         break;
-    case GraphicsContext3D::FRONT:
+    case GL_FRONT:
         m_stencilFuncRef = ref;
         m_stencilFuncMask = mask;
         break;
-    case GraphicsContext3D::BACK:
+    case GL_BACK:
         m_stencilFuncRefBack = ref;
         m_stencilFuncMaskBack = mask;
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "stencilFuncSeparate", "invalid face");
+        synthesizeGLError(GL_INVALID_ENUM, "stencilFuncSeparate", "invalid face");
         return;
     }
     m_context->stencilFuncSeparate(face, func, ref, mask);
 }
 
 void WebGLRenderingContext::stencilMask(GC3Duint mask)
 {
     if (isContextLost())
         return;
     m_stencilMask = mask;
     m_stencilMaskBack = mask;
     m_context->stencilMask(mask);
 }
 
 void WebGLRenderingContext::stencilMaskSeparate(GC3Denum face, GC3Duint mask)
 {
     if (isContextLost())
         return;
     switch (face) {
-    case GraphicsContext3D::FRONT_AND_BACK:
+    case GL_FRONT_AND_BACK:
         m_stencilMask = mask;
         m_stencilMaskBack = mask;
         break;
-    case GraphicsContext3D::FRONT:
+    case GL_FRONT:
         m_stencilMask = mask;
         break;
-    case GraphicsContext3D::BACK:
+    case GL_BACK:
         m_stencilMaskBack = mask;
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "stencilMaskSeparate", "invalid face");
+        synthesizeGLError(GL_INVALID_ENUM, "stencilMaskSeparate", "invalid face");
         return;
     }
     m_context->stencilMaskSeparate(face, mask);
 }
 
 void WebGLRenderingContext::stencilOp(GC3Denum fail, GC3Denum zfail, GC3Denum zpass)
 {
     if (isContextLost())
         return;
     m_context->stencilOp(fail, zfail, zpass);
@@ skipping 17 matching lines @@
     ASSERT(!pixels || validateSettableTexFormat("texImage2D", internalformat));
     m_context->texImage2D(target, level, internalformat, width, height,
                           border, format, type, pixels);
     tex->setLevelInfo(target, level, internalformat, width, height, type);
 }
 
 void WebGLRenderingContext::texImage2DImpl(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Denum format, GC3Denum type, Image* image, GraphicsContext3D::ImageHtmlDomSource domSource, bool flipY, bool premultiplyAlpha, ExceptionState& exceptionState)
 {
     // All calling functions check isContextLost, so a duplicate check is not needed here.
     Vector<uint8_t> data;
-    GraphicsContext3D::ImageExtractor imageExtractor(image, domSource, premultiplyAlpha, m_unpackColorspaceConversion == GraphicsContext3D::NONE);
+    GraphicsContext3D::ImageExtractor imageExtractor(image, domSource, premultiplyAlpha, m_unpackColorspaceConversion == GL_NONE);
     if (!imageExtractor.extractSucceeded()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "bad image data");
+        synthesizeGLError(GL_INVALID_VALUE, "texImage2D", "bad image data");
         return;
     }
     GraphicsContext3D::DataFormat sourceDataFormat = imageExtractor.imageSourceFormat();
     GraphicsContext3D::AlphaOp alphaOp = imageExtractor.imageAlphaOp();
     const void* imagePixelData = imageExtractor.imagePixelData();
 
     bool needConversion = true;
-    if (type == GraphicsContext3D::UNSIGNED_BYTE && sourceDataFormat == GraphicsContext3D::DataFormatRGBA8 && format == GraphicsContext3D::RGBA && alphaOp == GraphicsContext3D::AlphaDoNothing && !flipY)
+    if (type == GL_UNSIGNED_BYTE && sourceDataFormat == GraphicsContext3D::DataFormatRGBA8 && format == GL_RGBA && alphaOp == GraphicsContext3D::AlphaDoNothing && !flipY)
         needConversion = false;
     else {
         if (!m_context->packImageData(image, imagePixelData, format, type, flipY, alphaOp, sourceDataFormat, imageExtractor.imageWidth(), imageExtractor.imageHeight(), imageExtractor.imageSourceUnpackAlignment(), data)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "packImage error");
+            synthesizeGLError(GL_INVALID_VALUE, "texImage2D", "packImage error");
             return;
         }
     }
 
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, 1);
     texImage2DBase(target, level, internalformat, image->width(), image->height(), 0, format, type, needConversion ? data.data() : imagePixelData, exceptionState);
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 bool WebGLRenderingContext::validateTexFunc(const char* functionName, TexFuncValidationFunctionType functionType, TexFuncValidationSourceType sourceType, GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, GC3Dint xoffset, GC3Dint yoffset)
 {
     if (!validateTexFuncParameters(functionName, functionType, target, level, internalformat, width, height, border, format, type))
         return false;
 
     WebGLTexture* texture = validateTextureBinding(functionName, target, true);
     if (!texture)
         return false;
 
     if (functionType == NotTexSubImage2D) {
         if (level && WebGLTexture::isNPOT(width, height)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level > 0 not power of 2");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "level > 0 not power of 2");
             return false;
         }
         // For SourceArrayBufferView, function validateTexFuncData() would handle whether to validate the SettableTexFormat
         // by checking if the ArrayBufferView is null or not.
         if (sourceType != SourceArrayBufferView) {
             if (!validateSettableTexFormat(functionName, format))
                 return false;
         }
     } else {
         if (!validateSettableTexFormat(functionName, format))
             return false;
         if (!validateSize(functionName, xoffset, yoffset))
             return false;
         // Before checking if it is in the range, check if overflow happens first.
         if (xoffset + width < 0 || yoffset + height < 0) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "bad dimensions");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "bad dimensions");
             return false;
         }
         if (xoffset + width > texture->getWidth(target, level) || yoffset + height > texture->getHeight(target, level)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "dimensions out of range");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "dimensions out of range");
             return false;
         }
         if (texture->getInternalFormat(target, level) != format || texture->getType(target, level) != type) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "type and format do not match texture");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "type and format do not match texture");
             return false;
         }
     }
 
     return true;
 }
 
 PassRefPtr<Image> WebGLRenderingContext::drawImageIntoBuffer(Image* image, int width, int height, int deviceScaleFactor)
 {
     IntSize size(width, height);
     size.scale(deviceScaleFactor);
     ImageBuffer* buf = m_generatedImageCache.imageBuffer(size);
     if (!buf) {
-        synthesizeGLError(GraphicsContext3D::OUT_OF_MEMORY, "texImage2D", "out of memory");
+        synthesizeGLError(GL_OUT_OF_MEMORY, "texImage2D", "out of memory");
         return 0;
     }
 
     IntRect srcRect(IntPoint(), image->size());
     IntRect destRect(0, 0, size.width(), size.height());
     buf->context()->drawImage(image, destRect, srcRect);
     return buf->copyImage(ImageBuffer::fastCopyImageMode());
 }
 
 void WebGLRenderingContext::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat,
@@ skipping 10 matching lines @@
         if (!m_context->extractTextureData(width, height, format, type,
                                            m_unpackAlignment,
                                            m_unpackFlipY, m_unpackPremultiplyAlpha,
                                            data,
                                            tempData))
             return;
         data = tempData.data();
         changeUnpackAlignment = true;
     }
     if (changeUnpackAlignment)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, 1);
     texImage2DBase(target, level, internalformat, width, height, border, format, type, data, exceptionState);
     if (changeUnpackAlignment)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 void WebGLRenderingContext::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat,
     GC3Denum format, GC3Denum type, ImageData* pixels, ExceptionState& exceptionState)
 {
     if (isContextLost() || !pixels || !validateTexFunc("texImage2D", NotTexSubImage2D, SourceImageData, target, level, internalformat, pixels->width(), pixels->height(), 0, format, type, 0, 0))
         return;
     Vector<uint8_t> data;
     bool needConversion = true;
     // The data from ImageData is always of format RGBA8.
     // No conversion is needed if destination format is RGBA and type is USIGNED_BYTE and no Flip or Premultiply operation is required.
-    if (!m_unpackFlipY && !m_unpackPremultiplyAlpha && format == GraphicsContext3D::RGBA && type == GraphicsContext3D::UNSIGNED_BYTE)
+    if (!m_unpackFlipY && !m_unpackPremultiplyAlpha && format == GL_RGBA && type == GL_UNSIGNED_BYTE)
         needConversion = false;
     else {
         if (!m_context->extractImageData(pixels->data()->data(), pixels->size(), format, type, m_unpackFlipY, m_unpackPremultiplyAlpha, data)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "bad image data");
+            synthesizeGLError(GL_INVALID_VALUE, "texImage2D", "bad image data");
             return;
         }
     }
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, 1);
     texImage2DBase(target, level, internalformat, pixels->width(), pixels->height(), 0, format, type, needConversion ? data.data() : pixels->data()->data(), exceptionState);
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 void WebGLRenderingContext::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat,
     GC3Denum format, GC3Denum type, HTMLImageElement* image, ExceptionState& exceptionState)
 {
     if (isContextLost() || !validateHTMLImageElement("texImage2D", image, exceptionState))
         return;
 
     RefPtr<Image> imageForRender = image->cachedImage()->imageForRenderer(image->renderer());
     if (imageForRender->isSVGImage())
         imageForRender = drawImageIntoBuffer(imageForRender.get(), image->width(), image->height(), canvas()->deviceScaleFactor());
 
     if (!imageForRender || !validateTexFunc("texImage2D", NotTexSubImage2D, SourceHTMLImageElement, target, level, internalformat, imageForRender->width(), imageForRender->height(), 0, format, type, 0, 0))
         return;
 
     texImage2DImpl(target, level, internalformat, format, type, imageForRender.get(), GraphicsContext3D::HtmlDomImage, m_unpackFlipY, m_unpackPremultiplyAlpha, exceptionState);
 }
 
 void WebGLRenderingContext::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat,
     GC3Denum format, GC3Denum type, HTMLCanvasElement* canvas, ExceptionState& exceptionState)
 {
     if (isContextLost() || !validateHTMLCanvasElement("texImage2D", canvas, exceptionState) || !validateTexFunc("texImage2D", NotTexSubImage2D, SourceHTMLCanvasElement, target, level, internalformat, canvas->width(), canvas->height(), 0, format, type, 0, 0))
         return;
 
     WebGLTexture* texture = validateTextureBinding("texImage2D", target, true);
     // If possible, copy from the canvas element directly to the texture
     // via the GPU, without a read-back to system memory.
-    if (GraphicsContext3D::TEXTURE_2D == target && texture) {
+    if (GL_TEXTURE_2D == target && texture) {
         if (!canvas->is3D()) {
             ImageBuffer* buffer = canvas->buffer();
             if (buffer && buffer->copyToPlatformTexture(*m_context.get(), texture->object(), internalformat, type,
                 level, m_unpackPremultiplyAlpha, m_unpackFlipY)) {
                 texture->setLevelInfo(target, level, internalformat, canvas->width(), canvas->height(), type);
                 return;
             }
         } else {
             WebGLRenderingContext* gl = toWebGLRenderingContext(canvas->renderingContext());
             if (gl && gl->m_drawingBuffer->copyToPlatformTexture(*m_context.get(), texture->object(), internalformat, type,
                 level, m_unpackPremultiplyAlpha, m_unpackFlipY)) {
                 texture->setLevelInfo(target, level, internalformat, canvas->width(), canvas->height(), type);
                 return;
             }
         }
     }
 
     RefPtr<ImageData> imageData = canvas->getImageData();
     if (imageData)
         texImage2D(target, level, internalformat, format, type, imageData.get(), exceptionState);
     else
         texImage2DImpl(target, level, internalformat, format, type, canvas->copiedImage(), GraphicsContext3D::HtmlDomCanvas, m_unpackFlipY, m_unpackPremultiplyAlpha, exceptionState);
 }
 
 PassRefPtr<Image> WebGLRenderingContext::videoFrameToImage(HTMLVideoElement* video, BackingStoreCopy backingStoreCopy)
 {
     IntSize size(video->videoWidth(), video->videoHeight());
     ImageBuffer* buf = m_generatedImageCache.imageBuffer(size);
     if (!buf) {
-        synthesizeGLError(GraphicsContext3D::OUT_OF_MEMORY, "texImage2D", "out of memory");
+        synthesizeGLError(GL_OUT_OF_MEMORY, "texImage2D", "out of memory");
         return 0;
     }
     IntRect destRect(0, 0, size.width(), size.height());
     // FIXME: Turn this into a GPU-GPU texture copy instead of CPU readback.
     video->paintCurrentFrameInContext(buf->context(), destRect);
     return buf->copyImage(backingStoreCopy);
 }
 
 void WebGLRenderingContext::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat,
     GC3Denum format, GC3Denum type, HTMLVideoElement* video, ExceptionState& exceptionState)
 {
     if (isContextLost() || !validateHTMLVideoElement("texImage2D", video, exceptionState)
         || !validateTexFunc("texImage2D", NotTexSubImage2D, SourceHTMLVideoElement, target, level, internalformat, video->videoWidth(), video->videoHeight(), 0, format, type, 0, 0))
         return;
 
     // Go through the fast path doing a GPU-GPU textures copy without a readback to system memory if possible.
     // Otherwise, it will fall back to the normal SW path.
     WebGLTexture* texture = validateTextureBinding("texImage2D", target, true);
-    if (GraphicsContext3D::TEXTURE_2D == target && texture) {
+    if (GL_TEXTURE_2D == target && texture) {
         if (video->copyVideoTextureToPlatformTexture(m_context.get(), texture->object(), level, type, internalformat, m_unpackPremultiplyAlpha, m_unpackFlipY)) {
             texture->setLevelInfo(target, level, internalformat, video->videoWidth(), video->videoHeight(), type);
             return;
         }
     }
 
     // Normal pure SW path.
     RefPtr<Image> image = videoFrameToImage(video, ImageBuffer::fastCopyImageMode());
     if (!image)
         return;
     texImage2DImpl(target, level, internalformat, format, type, image.get(), GraphicsContext3D::HtmlDomVideo, m_unpackFlipY, m_unpackPremultiplyAlpha, exceptionState);
 }
 
 void WebGLRenderingContext::texParameter(GC3Denum target, GC3Denum pname, GC3Dfloat paramf, GC3Dint parami, bool isFloat)
 {
     if (isContextLost())
         return;
     WebGLTexture* tex = validateTextureBinding("texParameter", target, false);
     if (!tex)
         return;
     switch (pname) {
-    case GraphicsContext3D::TEXTURE_MIN_FILTER:
-    case GraphicsContext3D::TEXTURE_MAG_FILTER:
+    case GL_TEXTURE_MIN_FILTER:
+    case GL_TEXTURE_MAG_FILTER:
         break;
-    case GraphicsContext3D::TEXTURE_WRAP_S:
-    case GraphicsContext3D::TEXTURE_WRAP_T:
-        if ((isFloat && paramf != GraphicsContext3D::CLAMP_TO_EDGE && paramf != GraphicsContext3D::MIRRORED_REPEAT && paramf != GraphicsContext3D::REPEAT)
-            || (!isFloat && parami != GraphicsContext3D::CLAMP_TO_EDGE && parami != GraphicsContext3D::MIRRORED_REPEAT && parami != GraphicsContext3D::REPEAT)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "texParameter", "invalid parameter");
+    case GL_TEXTURE_WRAP_S:
+    case GL_TEXTURE_WRAP_T:
+        if ((isFloat && paramf != GL_CLAMP_TO_EDGE && paramf != GL_MIRRORED_REPEAT && paramf != GL_REPEAT)
+            || (!isFloat && parami != GL_CLAMP_TO_EDGE && parami != GL_MIRRORED_REPEAT && parami != GL_REPEAT)) {
+            synthesizeGLError(GL_INVALID_ENUM, "texParameter", "invalid parameter");
             return;
         }
         break;
     case Extensions3D::TEXTURE_MAX_ANISOTROPY_EXT: // EXT_texture_filter_anisotropic
         if (!m_extTextureFilterAnisotropic) {
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "texParameter", "invalid parameter, EXT_texture_filter_anisotropic not enabled");
+            synthesizeGLError(GL_INVALID_ENUM, "texParameter", "invalid parameter, EXT_texture_filter_anisotropic not enabled");
             return;
         }
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "texParameter", "invalid parameter name");
+        synthesizeGLError(GL_INVALID_ENUM, "texParameter", "invalid parameter name");
         return;
     }
     if (isFloat) {
         tex->setParameterf(pname, paramf);
         m_context->texParameterf(target, pname, paramf);
     } else {
         tex->setParameteri(pname, parami);
         m_context->texParameteri(target, pname, parami);
     }
 }
@@ skipping 26 matching lines @@
     ASSERT(tex->getHeight(target, level) >= (yoffset + height));
     ASSERT(tex->getInternalFormat(target, level) == format);
     ASSERT(tex->getType(target, level) == type);
     m_context->texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
 }
 
 void WebGLRenderingContext::texSubImage2DImpl(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Denum format, GC3Denum type, Image* image, GraphicsContext3D::ImageHtmlDomSource domSource, bool flipY, bool premultiplyAlpha, ExceptionState& exceptionState)
 {
     // All calling functions check isContextLost, so a duplicate check is not needed here.
     Vector<uint8_t> data;
-    GraphicsContext3D::ImageExtractor imageExtractor(image, domSource, premultiplyAlpha, m_unpackColorspaceConversion == GraphicsContext3D::NONE);
+    GraphicsContext3D::ImageExtractor imageExtractor(image, domSource, premultiplyAlpha, m_unpackColorspaceConversion == GL_NONE);
     if (!imageExtractor.extractSucceeded()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texSubImage2D", "bad image");
+        synthesizeGLError(GL_INVALID_VALUE, "texSubImage2D", "bad image");
         return;
     }
     GraphicsContext3D::DataFormat sourceDataFormat = imageExtractor.imageSourceFormat();
     GraphicsContext3D::AlphaOp alphaOp = imageExtractor.imageAlphaOp();
     const void* imagePixelData = imageExtractor.imagePixelData();
 
     bool needConversion = true;
-    if (type == GraphicsContext3D::UNSIGNED_BYTE && sourceDataFormat == GraphicsContext3D::DataFormatRGBA8 && format == GraphicsContext3D::RGBA && alphaOp == GraphicsContext3D::AlphaDoNothing && !flipY)
+    if (type == GL_UNSIGNED_BYTE && sourceDataFormat == GraphicsContext3D::DataFormatRGBA8 && format == GL_RGBA && alphaOp == GraphicsContext3D::AlphaDoNothing && !flipY)
         needConversion = false;
     else {
         if (!m_context->packImageData(image, imagePixelData, format, type, flipY, alphaOp, sourceDataFormat, imageExtractor.imageWidth(), imageExtractor.imageHeight(), imageExtractor.imageSourceUnpackAlignment(), data)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "bad image data");
+            synthesizeGLError(GL_INVALID_VALUE, "texImage2D", "bad image data");
             return;
         }
     }
 
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, 1);
     texSubImage2DBase(target, level, xoffset, yoffset, image->width(), image->height(), format, type,  needConversion ? data.data() : imagePixelData, exceptionState);
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 void WebGLRenderingContext::texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
     GC3Dsizei width, GC3Dsizei height,
     GC3Denum format, GC3Denum type, ArrayBufferView* pixels, ExceptionState& exceptionState)
 {
     if (isContextLost() || !validateTexFuncData("texSubImage2D", level, width, height, format, type, pixels, NullNotAllowed)
         || !validateTexFunc("texSubImage2D", TexSubImage2D, SourceArrayBufferView, target, level, format, width, height, 0, format, type, xoffset, yoffset))
         return;
     void* data = pixels->baseAddress();
     Vector<uint8_t> tempData;
     bool changeUnpackAlignment = false;
     if (data && (m_unpackFlipY || m_unpackPremultiplyAlpha)) {
         if (!m_context->extractTextureData(width, height, format, type,
                                            m_unpackAlignment,
                                            m_unpackFlipY, m_unpackPremultiplyAlpha,
                                            data,
                                            tempData))
             return;
         data = tempData.data();
         changeUnpackAlignment = true;
     }
     if (changeUnpackAlignment)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, 1);
     texSubImage2DBase(target, level, xoffset, yoffset, width, height, format, type, data, exceptionState);
     if (changeUnpackAlignment)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 void WebGLRenderingContext::texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
     GC3Denum format, GC3Denum type, ImageData* pixels, ExceptionState& exceptionState)
 {
     if (isContextLost() || !pixels || !validateTexFunc("texSubImage2D", TexSubImage2D, SourceImageData, target, level, format,  pixels->width(), pixels->height(), 0, format, type, xoffset, yoffset))
         return;
 
     Vector<uint8_t> data;
     bool needConversion = true;
     // The data from ImageData is always of format RGBA8.
     // No conversion is needed if destination format is RGBA and type is USIGNED_BYTE and no Flip or Premultiply operation is required.
-    if (format == GraphicsContext3D::RGBA && type == GraphicsContext3D::UNSIGNED_BYTE && !m_unpackFlipY && !m_unpackPremultiplyAlpha)
+    if (format == GL_RGBA && type == GL_UNSIGNED_BYTE && !m_unpackFlipY && !m_unpackPremultiplyAlpha)
         needConversion = false;
     else {
         if (!m_context->extractImageData(pixels->data()->data(), pixels->size(), format, type, m_unpackFlipY, m_unpackPremultiplyAlpha, data)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texSubImage2D", "bad image data");
+            synthesizeGLError(GL_INVALID_VALUE, "texSubImage2D", "bad image data");
             return;
         }
     }
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, 1);
     texSubImage2DBase(target, level, xoffset, yoffset, pixels->width(), pixels->height(), format, type, needConversion ? data.data() : pixels->data()->data(), exceptionState);
     if (m_unpackAlignment != 1)
-        m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment);
+        m_context->pixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 void WebGLRenderingContext::texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
     GC3Denum format, GC3Denum type, HTMLImageElement* image, ExceptionState& exceptionState)
 {
     if (isContextLost() || !validateHTMLImageElement("texSubImage2D", image, exceptionState))
         return;
 
     RefPtr<Image> imageForRender = image->cachedImage()->imageForRenderer(image->renderer());
     if (imageForRender->isSVGImage())
@@ skipping 31 matching lines @@
         return;
     texSubImage2DImpl(target, level, xoffset, yoffset, format, type, image.get(), GraphicsContext3D::HtmlDomVideo, m_unpackFlipY, m_unpackPremultiplyAlpha, exceptionState);
 }
 
 void WebGLRenderingContext::uniform1f(const WebGLUniformLocation* location, GC3Dfloat x)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform1f", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform1f", "location not for current program");
         return;
     }
 
     m_context->uniform1f(location->location(), x);
 }
 
 void WebGLRenderingContext::uniform1fv(const WebGLUniformLocation* location, Float32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform1fv", location, v, 1))
         return;
 
     m_context->uniform1fv(location->location(), v->length(), v->data());
 }
 
 void WebGLRenderingContext::uniform1fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform1fv", location, v, size, 1))
         return;
 
     m_context->uniform1fv(location->location(), size, v);
 }
 
 void WebGLRenderingContext::uniform1i(const WebGLUniformLocation* location, GC3Dint x)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform1i", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform1i", "location not for current program");
         return;
     }
 
     m_context->uniform1i(location->location(), x);
 }
 
 void WebGLRenderingContext::uniform1iv(const WebGLUniformLocation* location, Int32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform1iv", location, v, 1))
         return;
 
     m_context->uniform1iv(location->location(), v->length(), v->data());
 }
 
 void WebGLRenderingContext::uniform1iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform1iv", location, v, size, 1))
         return;
 
     m_context->uniform1iv(location->location(), size, v);
 }
 
 void WebGLRenderingContext::uniform2f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform2f", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform2f", "location not for current program");
         return;
     }
 
     m_context->uniform2f(location->location(), x, y);
 }
 
 void WebGLRenderingContext::uniform2fv(const WebGLUniformLocation* location, Float32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform2fv", location, v, 2))
         return;
 
     m_context->uniform2fv(location->location(), v->length() / 2, v->data());
 }
 
 void WebGLRenderingContext::uniform2fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform2fv", location, v, size, 2))
         return;
 
     m_context->uniform2fv(location->location(), size / 2, v);
 }
 
 void WebGLRenderingContext::uniform2i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform2i", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform2i", "location not for current program");
         return;
     }
 
     m_context->uniform2i(location->location(), x, y);
 }
 
 void WebGLRenderingContext::uniform2iv(const WebGLUniformLocation* location, Int32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform2iv", location, v, 2))
         return;
 
     m_context->uniform2iv(location->location(), v->length() / 2, v->data());
 }
 
 void WebGLRenderingContext::uniform2iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform2iv", location, v, size, 2))
         return;
 
     m_context->uniform2iv(location->location(), size / 2, v);
 }
 
 void WebGLRenderingContext::uniform3f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform3f", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform3f", "location not for current program");
         return;
     }
 
     m_context->uniform3f(location->location(), x, y, z);
 }
 
 void WebGLRenderingContext::uniform3fv(const WebGLUniformLocation* location, Float32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform3fv", location, v, 3))
         return;
 
     m_context->uniform3fv(location->location(), v->length() / 3, v->data());
 }
 
 void WebGLRenderingContext::uniform3fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform3fv", location, v, size, 3))
         return;
 
     m_context->uniform3fv(location->location(), size / 3, v);
 }
 
 void WebGLRenderingContext::uniform3i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform3i", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform3i", "location not for current program");
         return;
     }
 
     m_context->uniform3i(location->location(), x, y, z);
 }
 
 void WebGLRenderingContext::uniform3iv(const WebGLUniformLocation* location, Int32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform3iv", location, v, 3))
         return;
 
     m_context->uniform3iv(location->location(), v->length() / 3, v->data());
 }
 
 void WebGLRenderingContext::uniform3iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform3iv", location, v, size, 3))
         return;
 
     m_context->uniform3iv(location->location(), size / 3, v);
 }
 
 void WebGLRenderingContext::uniform4f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform4f", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform4f", "location not for current program");
         return;
     }
 
     m_context->uniform4f(location->location(), x, y, z, w);
 }
 
 void WebGLRenderingContext::uniform4fv(const WebGLUniformLocation* location, Float32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform4fv", location, v, 4))
         return;
 
     m_context->uniform4fv(location->location(), v->length() / 4, v->data());
 }
 
 void WebGLRenderingContext::uniform4fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size)
 {
     if (isContextLost() || !validateUniformParameters("uniform4fv", location, v, size, 4))
         return;
 
     m_context->uniform4fv(location->location(), size / 4, v);
 }
 
 void WebGLRenderingContext::uniform4i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, GC3Dint w)
 {
     if (isContextLost() || !location)
         return;
 
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform4i", "location not for current program");
+        synthesizeGLError(GL_INVALID_OPERATION, "uniform4i", "location not for current program");
         return;
     }
 
     m_context->uniform4i(location->location(), x, y, z, w);
 }
 
 void WebGLRenderingContext::uniform4iv(const WebGLUniformLocation* location, Int32Array* v)
 {
     if (isContextLost() || !validateUniformParameters("uniform4iv", location, v, 4))
         return;
@@ skipping 52 matching lines @@
 }
 
 void WebGLRenderingContext::useProgram(WebGLProgram* program)
 {
     bool deleted;
     if (!checkObjectToBeBound("useProgram", program, deleted))
         return;
     if (deleted)
         program = 0;
     if (program && !program->linkStatus()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "useProgram", "program not valid");
+        synthesizeGLError(GL_INVALID_OPERATION, "useProgram", "program not valid");
         return;
     }
     if (m_currentProgram != program) {
         if (m_currentProgram)
             m_currentProgram->onDetached(graphicsContext3D());
         m_currentProgram = program;
         m_context->useProgram(objectOrZero(program));
         if (program)
             program->onAttached();
     }
@@ skipping 64 matching lines @@
 void WebGLRenderingContext::vertexAttrib4fv(GC3Duint index, GC3Dfloat* v, GC3Dsizei size)
 {
     vertexAttribfvImpl("vertexAttrib4fv", index, v, size, 4);
 }
 
 void WebGLRenderingContext::vertexAttribPointer(GC3Duint index, GC3Dint size, GC3Denum type, GC3Dboolean normalized, GC3Dsizei stride, long long offset)
 {
     if (isContextLost())
         return;
     switch (type) {
-    case GraphicsContext3D::BYTE:
-    case GraphicsContext3D::UNSIGNED_BYTE:
-    case GraphicsContext3D::SHORT:
-    case GraphicsContext3D::UNSIGNED_SHORT:
-    case GraphicsContext3D::FLOAT:
+    case GL_BYTE:
+    case GL_UNSIGNED_BYTE:
+    case GL_SHORT:
+    case GL_UNSIGNED_SHORT:
+    case GL_FLOAT:
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "vertexAttribPointer", "invalid type");
+        synthesizeGLError(GL_INVALID_ENUM, "vertexAttribPointer", "invalid type");
         return;
     }
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "vertexAttribPointer", "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "vertexAttribPointer", "index out of range");
         return;
     }
     if (size < 1 || size > 4 || stride < 0 || stride > 255 || offset < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "vertexAttribPointer", "bad size, stride or offset");
+        synthesizeGLError(GL_INVALID_VALUE, "vertexAttribPointer", "bad size, stride or offset");
         return;
     }
     if (!m_boundArrayBuffer) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "vertexAttribPointer", "no bound ARRAY_BUFFER");
+        synthesizeGLError(GL_INVALID_OPERATION, "vertexAttribPointer", "no bound ARRAY_BUFFER");
         return;
     }
     // Determine the number of elements the bound buffer can hold, given the offset, size, type and stride
     unsigned int typeSize = sizeInBytes(type);
     if (!typeSize) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "vertexAttribPointer", "invalid type");
+        synthesizeGLError(GL_INVALID_ENUM, "vertexAttribPointer", "invalid type");
         return;
     }
     if ((stride % typeSize) || (static_cast<GC3Dintptr>(offset) % typeSize)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "vertexAttribPointer", "stride or offset not valid for type");
+        synthesizeGLError(GL_INVALID_OPERATION, "vertexAttribPointer", "stride or offset not valid for type");
         return;
     }
     GC3Dsizei bytesPerElement = size * typeSize;
 
     m_boundVertexArrayObject->setVertexAttribState(index, bytesPerElement, size, type, normalized, stride, static_cast<GC3Dintptr>(offset), m_boundArrayBuffer);
     m_context->vertexAttribPointer(index, size, type, normalized, stride, static_cast<GC3Dintptr>(offset));
 }
 
 void WebGLRenderingContext::vertexAttribDivisorANGLE(GC3Duint index, GC3Duint divisor)
 {
     if (isContextLost())
         return;
 
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "vertexAttribDivisorANGLE", "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, "vertexAttribDivisorANGLE", "index out of range");
         return;
     }
 
     m_boundVertexArrayObject->setVertexAttribDivisor(index, divisor);
     m_context->extensions()->vertexAttribDivisorANGLE(index, divisor);
 }
 
 void WebGLRenderingContext::viewport(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height)
 {
     if (isContextLost())
         return;
     if (!validateSize("viewport", width, height))
         return;
     m_context->viewport(x, y, width, height);
 }
 
 void WebGLRenderingContext::forceLostContext(WebGLRenderingContext::LostContextMode mode)
 {
     if (isContextLost()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "loseContext", "context already lost");
+        synthesizeGLError(GL_INVALID_OPERATION, "loseContext", "context already lost");
         return;
     }
 
     m_contextGroup->loseContextGroup(mode);
 }
 
 void WebGLRenderingContext::loseContextImpl(WebGLRenderingContext::LostContextMode mode)
 {
     if (isContextLost())
         return;
@@ skipping 19 matching lines @@
         ExtensionTracker* tracker = m_extensions[i];
         tracker->loseExtension();
     }
 
     removeAllCompressedTextureFormats();
 
     if (mode != RealLostContext)
         destroyGraphicsContext3D();
 
     ConsoleDisplayPreference display = (mode == RealLostContext) ? DisplayInConsole: DontDisplayInConsole;
-    synthesizeGLError(GraphicsContext3D::CONTEXT_LOST_WEBGL, "loseContext", "context lost", display);
+    synthesizeGLError(GC3D_CONTEXT_LOST_WEBGL, "loseContext", "context lost", display);
 
     // Don't allow restoration unless the context lost event has both been
     // dispatched and its default behavior prevented.
     m_restoreAllowed = false;
 
     // Always defer the dispatch of the context lost event, to implement
     // the spec behavior of queueing a task.
     m_dispatchContextLostEventTimer.startOneShot(0);
 }
 
 void WebGLRenderingContext::forceRestoreContext()
 {
     if (!isContextLost()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "restoreContext", "context not lost");
+        synthesizeGLError(GL_INVALID_OPERATION, "restoreContext", "context not lost");
         return;
     }
 
     if (!m_restoreAllowed) {
         if (m_contextLostMode == SyntheticLostContext)
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "restoreContext", "context restoration not allowed");
+            synthesizeGLError(GL_INVALID_OPERATION, "restoreContext", "context restoration not allowed");
         return;
     }
 
     if (!m_restoreTimer.isActive())
         m_restoreTimer.startOneShot(0);
 }
 
 blink::WebLayer* WebGLRenderingContext::platformLayer() const
 {
     return m_drawingBuffer->platformLayer();
@@ skipping 45 matching lines @@
 WebGLGetInfo WebGLRenderingContext::getBooleanParameter(GC3Denum pname)
 {
     GC3Dboolean value = 0;
     if (!isContextLost())
         m_context->getBooleanv(pname, &value);
     return WebGLGetInfo(static_cast<bool>(value));
 }
 
 WebGLGetInfo WebGLRenderingContext::getBooleanArrayParameter(GC3Denum pname)
 {
-    if (pname != GraphicsContext3D::COLOR_WRITEMASK) {
+    if (pname != GL_COLOR_WRITEMASK) {
         notImplemented();
         return WebGLGetInfo(0, 0);
     }
     GC3Dboolean value[4] = {0};
     if (!isContextLost())
         m_context->getBooleanv(pname, value);
     bool boolValue[4];
     for (int ii = 0; ii < 4; ++ii)
         boolValue[ii] = static_cast<bool>(value[ii]);
     return WebGLGetInfo(boolValue, 4);
@@ skipping 23 matching lines @@
     return WebGLGetInfo(static_cast<unsigned int>(value));
 }
 
 WebGLGetInfo WebGLRenderingContext::getWebGLFloatArrayParameter(GC3Denum pname)
 {
     GC3Dfloat value[4] = {0};
     if (!isContextLost())
         m_context->getFloatv(pname, value);
     unsigned length = 0;
     switch (pname) {
-    case GraphicsContext3D::ALIASED_POINT_SIZE_RANGE:
-    case GraphicsContext3D::ALIASED_LINE_WIDTH_RANGE:
-    case GraphicsContext3D::DEPTH_RANGE:
+    case GL_ALIASED_POINT_SIZE_RANGE:
+    case GL_ALIASED_LINE_WIDTH_RANGE:
+    case GL_DEPTH_RANGE:
         length = 2;
         break;
-    case GraphicsContext3D::BLEND_COLOR:
-    case GraphicsContext3D::COLOR_CLEAR_VALUE:
+    case GL_BLEND_COLOR:
+    case GL_COLOR_CLEAR_VALUE:
         length = 4;
         break;
     default:
         notImplemented();
     }
     return WebGLGetInfo(Float32Array::create(value, length));
 }
 
 WebGLGetInfo WebGLRenderingContext::getWebGLIntArrayParameter(GC3Denum pname)
 {
     GC3Dint value[4] = {0};
     if (!isContextLost())
         m_context->getIntegerv(pname, value);
     unsigned length = 0;
     switch (pname) {
-    case GraphicsContext3D::MAX_VIEWPORT_DIMS:
+    case GL_MAX_VIEWPORT_DIMS:
         length = 2;
         break;
-    case GraphicsContext3D::SCISSOR_BOX:
-    case GraphicsContext3D::VIEWPORT:
+    case GL_SCISSOR_BOX:
+    case GL_VIEWPORT:
         length = 4;
         break;
     default:
         notImplemented();
     }
     return WebGLGetInfo(Int32Array::create(value, length));
 }
 
 void WebGLRenderingContext::handleTextureCompleteness(const char* functionName, bool prepareToDraw)
 {
@@ skipping 18 matching lines @@
                     + " is not renderable. It maybe non-power-of-2 and have incompatible texture filtering or is not 'texture complete'."
                     + " Or the texture is Float or Half Float type with linear filtering while OES_float_linear or OES_half_float_linear extension is not enabled.");
                 emitGLWarning(functionName, msg.utf8().data());
                 tex2D = m_blackTexture2D.get();
                 texCubeMap = m_blackTextureCubeMap.get();
             } else {
                 tex2D = m_textureUnits[ii].m_texture2DBinding.get();
                 texCubeMap = m_textureUnits[ii].m_textureCubeMapBinding.get();
             }
             if (m_textureUnits[ii].m_texture2DBinding && m_textureUnits[ii].m_texture2DBinding->needToUseBlackTexture(flag))
-                m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, objectOrZero(tex2D));
+                m_context->bindTexture(GL_TEXTURE_2D, objectOrZero(tex2D));
             if (m_textureUnits[ii].m_textureCubeMapBinding && m_textureUnits[ii].m_textureCubeMapBinding->needToUseBlackTexture(flag))
-                m_context->bindTexture(GraphicsContext3D::TEXTURE_CUBE_MAP, objectOrZero(texCubeMap));
+                m_context->bindTexture(GL_TEXTURE_CUBE_MAP, objectOrZero(texCubeMap));
         }
     }
     if (resetActiveUnit)
         m_context->activeTexture(m_activeTextureUnit);
 }
 
 void WebGLRenderingContext::createFallbackBlackTextures1x1()
 {
     // All calling functions check isContextLost, so a duplicate check is not needed here.
     unsigned char black[] = {0, 0, 0, 255};
     m_blackTexture2D = createTexture();
-    m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_blackTexture2D->object());
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0);
+    m_context->bindTexture(GL_TEXTURE_2D, m_blackTexture2D->object());
+    m_context->texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->bindTexture(GL_TEXTURE_2D, 0);
     m_blackTextureCubeMap = createTexture();
-    m_context->bindTexture(GraphicsContext3D::TEXTURE_CUBE_MAP, m_blackTextureCubeMap->object());
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GraphicsContext3D::RGBA, 1, 1,
-                          0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black);
-    m_context->bindTexture(GraphicsContext3D::TEXTURE_CUBE_MAP, 0);
+    m_context->bindTexture(GL_TEXTURE_CUBE_MAP, m_blackTextureCubeMap->object());
+    m_context->texImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->texImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->texImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->texImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->texImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->texImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GL_RGBA, 1, 1,
+        0, GL_RGBA, GL_UNSIGNED_BYTE, black);
+    m_context->bindTexture(GL_TEXTURE_CUBE_MAP, 0);
 }
 
 bool WebGLRenderingContext::isTexInternalFormatColorBufferCombinationValid(GC3Denum texInternalFormat,
                                                                            GC3Denum colorBufferFormat)
 {
     unsigned need = GraphicsContext3D::getChannelBitsByFormat(texInternalFormat);
     unsigned have = GraphicsContext3D::getChannelBitsByFormat(colorBufferFormat);
     return (need & have) == need;
 }
 
 GC3Denum WebGLRenderingContext::boundFramebufferColorFormat()
 {
     if (m_framebufferBinding && m_framebufferBinding->object())
         return m_framebufferBinding->colorBufferFormat();
     if (m_attributes.alpha)
-        return GraphicsContext3D::RGBA;
-    return GraphicsContext3D::RGB;
+        return GL_RGBA;
+    return GL_RGB;
 }
 
 int WebGLRenderingContext::boundFramebufferWidth()
 {
     if (m_framebufferBinding && m_framebufferBinding->object())
         return m_framebufferBinding->colorBufferWidth();
     return m_drawingBuffer->size().width();
 }
 
 int WebGLRenderingContext::boundFramebufferHeight()
 {
     if (m_framebufferBinding && m_framebufferBinding->object())
         return m_framebufferBinding->colorBufferHeight();
     return m_drawingBuffer->size().height();
 }
 
 WebGLTexture* WebGLRenderingContext::validateTextureBinding(const char* functionName, GC3Denum target, bool useSixEnumsForCubeMap)
 {
     WebGLTexture* tex = 0;
     switch (target) {
-    case GraphicsContext3D::TEXTURE_2D:
+    case GL_TEXTURE_2D:
         tex = m_textureUnits[m_activeTextureUnit].m_texture2DBinding.get();
         break;
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
         if (!useSixEnumsForCubeMap) {
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture target");
+            synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture target");
             return 0;
         }
         tex = m_textureUnits[m_activeTextureUnit].m_textureCubeMapBinding.get();
         break;
-    case GraphicsContext3D::TEXTURE_CUBE_MAP:
+    case GL_TEXTURE_CUBE_MAP:
         if (useSixEnumsForCubeMap) {
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture target");
+            synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture target");
             return 0;
         }
         tex = m_textureUnits[m_activeTextureUnit].m_textureCubeMapBinding.get();
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture target");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture target");
         return 0;
     }
     if (!tex)
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "no texture");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "no texture");
     return tex;
 }
 
 bool WebGLRenderingContext::validateLocationLength(const char* functionName, const String& string)
 {
     const unsigned maxWebGLLocationLength = 256;
     if (string.length() > maxWebGLLocationLength) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "location length > 256");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "location length > 256");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateSize(const char* functionName, GC3Dint x, GC3Dint y)
 {
     if (x < 0 || y < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "size < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "size < 0");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateString(const char* functionName, const String& string)
 {
     for (size_t i = 0; i < string.length(); ++i) {
         if (!validateCharacter(string[i])) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "string not ASCII");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "string not ASCII");
             return false;
         }
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateTexFuncFormatAndType(const char* functionName, GC3Denum format, GC3Denum type, GC3Dint level)
 {
     switch (format) {
-    case GraphicsContext3D::ALPHA:
-    case GraphicsContext3D::LUMINANCE:
-    case GraphicsContext3D::LUMINANCE_ALPHA:
-    case GraphicsContext3D::RGB:
-    case GraphicsContext3D::RGBA:
+    case GL_ALPHA:
+    case GL_LUMINANCE:
+    case GL_LUMINANCE_ALPHA:
+    case GL_RGB:
+    case GL_RGBA:
         break;
-    case GraphicsContext3D::DEPTH_STENCIL:
-    case GraphicsContext3D::DEPTH_COMPONENT:
+    case GL_DEPTH_STENCIL_OES:
+    case GL_DEPTH_COMPONENT:
         if (m_webglDepthTexture)
             break;
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "depth texture formats not enabled");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "depth texture formats not enabled");
         return false;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture format");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture format");
         return false;
     }
 
     switch (type) {
-    case GraphicsContext3D::UNSIGNED_BYTE:
-    case GraphicsContext3D::UNSIGNED_SHORT_5_6_5:
-    case GraphicsContext3D::UNSIGNED_SHORT_4_4_4_4:
-    case GraphicsContext3D::UNSIGNED_SHORT_5_5_5_1:
+    case GL_UNSIGNED_BYTE:
+    case GL_UNSIGNED_SHORT_5_6_5:
+    case GL_UNSIGNED_SHORT_4_4_4_4:
+    case GL_UNSIGNED_SHORT_5_5_5_1:
         break;
-    case GraphicsContext3D::FLOAT:
+    case GL_FLOAT:
         if (m_oesTextureFloat)
             break;
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture type");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture type");
         return false;
-    case GraphicsContext3D::HALF_FLOAT_OES:
+    case GL_HALF_FLOAT_OES:
         if (m_oesTextureHalfFloat)
             break;
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture type");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture type");
         return false;
-    case GraphicsContext3D::UNSIGNED_INT:
-    case GraphicsContext3D::UNSIGNED_INT_24_8:
-    case GraphicsContext3D::UNSIGNED_SHORT:
+    case GL_UNSIGNED_INT:
+    case GL_UNSIGNED_INT_24_8_OES:
+    case GL_UNSIGNED_SHORT:
         if (m_webglDepthTexture)
             break;
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture type");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture type");
         return false;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture type");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid texture type");
         return false;
     }
 
     // Verify that the combination of format and type is supported.
     switch (format) {
-    case GraphicsContext3D::ALPHA:
-    case GraphicsContext3D::LUMINANCE:
-    case GraphicsContext3D::LUMINANCE_ALPHA:
-        if (type != GraphicsContext3D::UNSIGNED_BYTE
-            && type != GraphicsContext3D::FLOAT
-            && type != GraphicsContext3D::HALF_FLOAT_OES) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "invalid type for format");
+    case GL_ALPHA:
+    case GL_LUMINANCE:
+    case GL_LUMINANCE_ALPHA:
+        if (type != GL_UNSIGNED_BYTE
+            && type != GL_FLOAT
+            && type != GL_HALF_FLOAT_OES) {
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "invalid type for format");
             return false;
         }
         break;
-    case GraphicsContext3D::RGB:
-        if (type != GraphicsContext3D::UNSIGNED_BYTE
-            && type != GraphicsContext3D::UNSIGNED_SHORT_5_6_5
-            && type != GraphicsContext3D::FLOAT
-            && type != GraphicsContext3D::HALF_FLOAT_OES) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "invalid type for RGB format");
+    case GL_RGB:
+        if (type != GL_UNSIGNED_BYTE
+            && type != GL_UNSIGNED_SHORT_5_6_5
+            && type != GL_FLOAT
+            && type != GL_HALF_FLOAT_OES) {
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "invalid type for RGB format");
             return false;
         }
         break;
-    case GraphicsContext3D::RGBA:
-        if (type != GraphicsContext3D::UNSIGNED_BYTE
-            && type != GraphicsContext3D::UNSIGNED_SHORT_4_4_4_4
-            && type != GraphicsContext3D::UNSIGNED_SHORT_5_5_5_1
-            && type != GraphicsContext3D::FLOAT
-            && type != GraphicsContext3D::HALF_FLOAT_OES) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "invalid type for RGBA format");
+    case GL_RGBA:
+        if (type != GL_UNSIGNED_BYTE
+            && type != GL_UNSIGNED_SHORT_4_4_4_4
+            && type != GL_UNSIGNED_SHORT_5_5_5_1
+            && type != GL_FLOAT
+            && type != GL_HALF_FLOAT_OES) {
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "invalid type for RGBA format");
             return false;
         }
         break;
-    case GraphicsContext3D::DEPTH_COMPONENT:
+    case GL_DEPTH_COMPONENT:
         if (!m_webglDepthTexture) {
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid format. DEPTH_COMPONENT not enabled");
+            synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid format. DEPTH_COMPONENT not enabled");
             return false;
         }
-        if (type != GraphicsContext3D::UNSIGNED_SHORT
-            && type != GraphicsContext3D::UNSIGNED_INT) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "invalid type for DEPTH_COMPONENT format");
+        if (type != GL_UNSIGNED_SHORT
+            && type != GL_UNSIGNED_INT) {
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "invalid type for DEPTH_COMPONENT format");
             return false;
         }
         if (level > 0) {
-          synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "level must be 0 for DEPTH_COMPONENT format");
-          return false;
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "level must be 0 for DEPTH_COMPONENT format");
+            return false;
         }
         break;
-    case GraphicsContext3D::DEPTH_STENCIL:
+    case GL_DEPTH_STENCIL_OES:
         if (!m_webglDepthTexture) {
-            synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid format. DEPTH_STENCIL not enabled");
+            synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid format. DEPTH_STENCIL not enabled");
             return false;
         }
-        if (type != GraphicsContext3D::UNSIGNED_INT_24_8) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "invalid type for DEPTH_STENCIL format");
+        if (type != GL_UNSIGNED_INT_24_8_OES) {
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "invalid type for DEPTH_STENCIL format");
             return false;
         }
         if (level > 0) {
-          synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "level must be 0 for DEPTH_STENCIL format");
-          return false;
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "level must be 0 for DEPTH_STENCIL format");
+            return false;
         }
         break;
     default:
         ASSERT_NOT_REACHED();
     }
 
     return true;
 }
 
 bool WebGLRenderingContext::validateTexFuncLevel(const char* functionName, GC3Denum target, GC3Dint level)
 {
     if (level < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "level < 0");
         return false;
     }
     switch (target) {
-    case GraphicsContext3D::TEXTURE_2D:
+    case GL_TEXTURE_2D:
         if (level >= m_maxTextureLevel) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level out of range");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "level out of range");
             return false;
         }
         break;
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
         if (level >= m_maxCubeMapTextureLevel) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level out of range");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "level out of range");
             return false;
         }
         break;
     }
     // This function only checks if level is legal, so we return true and don't
     // generate INVALID_ENUM if target is illegal.
     return true;
 }
 
 bool WebGLRenderingContext::validateTexFuncDimensions(const char* functionName, TexFuncValidationFunctionType functionType,
     GC3Denum target, GC3Dint level, GC3Dsizei width, GC3Dsizei height)
 {
     if (width < 0 || height < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "width or height < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "width or height < 0");
         return false;
     }
 
     switch (target) {
-    case GraphicsContext3D::TEXTURE_2D:
+    case GL_TEXTURE_2D:
         if (width > (m_maxTextureSize >> level) || height > (m_maxTextureSize >> level)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "width or height out of range");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "width or height out of range");
             return false;
         }
         break;
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z:
-    case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
         if (functionType != TexSubImage2D && width != height) {
-          synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "width != height for cube map");
-          return false;
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "width != height for cube map");
+            return false;
         }
         // No need to check height here. For texImage width == height.
         // For texSubImage that will be checked when checking yoffset + height is in range.
         if (width > (m_maxCubeMapTextureSize >> level)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "width or height out of range for cube map");
+            synthesizeGLError(GL_INVALID_VALUE, functionName, "width or height out of range for cube map");
             return false;
         }
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid target");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid target");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateTexFuncParameters(const char* functionName, TexFuncValidationFunctionType functionType, GC3Denum target,
     GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type)
 {
     // We absolutely have to validate the format and type combination.
     // The texImage2D entry points taking HTMLImage, etc. will produce
     // temporary data based on this combination, so it must be legal.
     if (!validateTexFuncFormatAndType(functionName, format, type, level) || !validateTexFuncLevel(functionName, target, level))
         return false;
 
     if (!validateTexFuncDimensions(functionName, functionType, target, level, width, height))
         return false;
 
     if (format != internalformat) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "format != internalformat");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "format != internalformat");
         return false;
     }
 
     if (border) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "border != 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "border != 0");
         return false;
     }
 
     return true;
 }
 
 bool WebGLRenderingContext::validateTexFuncData(const char* functionName, GC3Dint level,
                                                 GC3Dsizei width, GC3Dsizei height,
                                                 GC3Denum format, GC3Denum type,
                                                 ArrayBufferView* pixels,
                                                 NullDisposition disposition)
 {
     // All calling functions check isContextLost, so a duplicate check is not needed here.
     if (!pixels) {
         if (disposition == NullAllowed)
             return true;
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no pixels");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no pixels");
         return false;
     }
 
     if (!validateTexFuncFormatAndType(functionName, format, type, level))
         return false;
     if (!validateSettableTexFormat(functionName, format))
         return false;
 
     switch (type) {
-    case GraphicsContext3D::UNSIGNED_BYTE:
+    case GL_UNSIGNED_BYTE:
         if (pixels->getType() != ArrayBufferView::TypeUint8) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "type UNSIGNED_BYTE but ArrayBufferView not Uint8Array");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "type UNSIGNED_BYTE but ArrayBufferView not Uint8Array");
             return false;
         }
         break;
-    case GraphicsContext3D::UNSIGNED_SHORT_5_6_5:
-    case GraphicsContext3D::UNSIGNED_SHORT_4_4_4_4:
-    case GraphicsContext3D::UNSIGNED_SHORT_5_5_5_1:
+    case GL_UNSIGNED_SHORT_5_6_5:
+    case GL_UNSIGNED_SHORT_4_4_4_4:
+    case GL_UNSIGNED_SHORT_5_5_5_1:
         if (pixels->getType() != ArrayBufferView::TypeUint16) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "type UNSIGNED_SHORT but ArrayBufferView not Uint16Array");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "type UNSIGNED_SHORT but ArrayBufferView not Uint16Array");
             return false;
         }
         break;
-    case GraphicsContext3D::FLOAT: // OES_texture_float
+    case GL_FLOAT: // OES_texture_float
         if (pixels->getType() != ArrayBufferView::TypeFloat32) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "type FLOAT but ArrayBufferView not Float32Array");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "type FLOAT but ArrayBufferView not Float32Array");
             return false;
         }
         break;
-    case GraphicsContext3D::HALF_FLOAT_OES: // OES_texture_half_float
+    case GL_HALF_FLOAT_OES: // OES_texture_half_float
         // As per the specification, ArrayBufferView should be null when
         // OES_texture_half_float is enabled.
         if (pixels) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "type HALF_FLOAT_OES but ArrayBufferView is not NULL");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "type HALF_FLOAT_OES but ArrayBufferView is not NULL");
             return false;
         }
         break;
     default:
         ASSERT_NOT_REACHED();
     }
 
     unsigned int totalBytesRequired;
     GC3Denum error = m_context->computeImageSizeInBytes(format, type, width, height, m_unpackAlignment, &totalBytesRequired, 0);
-    if (error != GraphicsContext3D::NO_ERROR) {
+    if (error != GL_NO_ERROR) {
         synthesizeGLError(error, functionName, "invalid texture dimensions");
         return false;
     }
     if (pixels->byteLength() < totalBytesRequired) {
         if (m_unpackAlignment != 1) {
           error = m_context->computeImageSizeInBytes(format, type, width, height, 1, &totalBytesRequired, 0);
           if (pixels->byteLength() == totalBytesRequired) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "ArrayBufferView not big enough for request with UNPACK_ALIGNMENT > 1");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "ArrayBufferView not big enough for request with UNPACK_ALIGNMENT > 1");
             return false;
           }
         }
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "ArrayBufferView not big enough for request");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "ArrayBufferView not big enough for request");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateCompressedTexFormat(GC3Denum format)
 {
     return m_compressedTextureFormats.contains(format);
 }
 
 bool WebGLRenderingContext::validateCompressedTexFuncData(const char* functionName,
                                                           GC3Dsizei width, GC3Dsizei height,
                                                           GC3Denum format, ArrayBufferView* pixels)
 {
     if (!pixels) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no pixels");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no pixels");
         return false;
     }
     if (width < 0 || height < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "width or height < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "width or height < 0");
         return false;
     }
 
     unsigned int bytesRequired = 0;
 
     switch (format) {
     case Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT:
         {
             const int kBlockWidth = 4;
@@ skipping 33 matching lines @@
             bytesRequired = max(width, 8) * max(height, 8) / 2;
         }
         break;
     case Extensions3D::COMPRESSED_RGB_PVRTC_2BPPV1_IMG:
     case Extensions3D::COMPRESSED_RGBA_PVRTC_2BPPV1_IMG:
         {
             bytesRequired = max(width, 8) * max(height, 8) / 4;
         }
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid format");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid format");
         return false;
     }
 
     if (pixels->byteLength() != bytesRequired) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "length of ArrayBufferView is not correct for dimensions");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "length of ArrayBufferView is not correct for dimensions");
         return false;
     }
 
     return true;
 }
 
 bool WebGLRenderingContext::validateCompressedTexDimensions(const char* functionName, TexFuncValidationFunctionType functionType, GC3Denum target, GC3Dint level, GC3Dsizei width, GC3Dsizei height, GC3Denum format)
 {
     if (!validateTexFuncDimensions(functionName, functionType, target, level, width, height))
         return false;
 
     switch (format) {
     case Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT: {
         const int kBlockWidth = 4;
         const int kBlockHeight = 4;
         bool widthValid = (level && width == 1) || (level && width == 2) || !(width % kBlockWidth);
         bool heightValid = (level && height == 1) || (level && height == 2) || !(height % kBlockHeight);
         if (!widthValid || !heightValid) {
-          synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "width or height invalid for level");
-          return false;
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "width or height invalid for level");
+            return false;
         }
         return true;
     }
     default:
         return false;
     }
 }
 
 bool WebGLRenderingContext::validateCompressedTexSubDimensions(const char* functionName, GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset,
                                                                GC3Dsizei width, GC3Dsizei height, GC3Denum format, WebGLTexture* tex)
 {
     if (xoffset < 0 || yoffset < 0) {
-      synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "xoffset or yoffset < 0");
-      return false;
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "xoffset or yoffset < 0");
+        return false;
     }
 
     switch (format) {
     case Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT:
     case Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT: {
         const int kBlockWidth = 4;
         const int kBlockHeight = 4;
         if ((xoffset % kBlockWidth) || (yoffset % kBlockHeight)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "xoffset or yoffset not multiple of 4");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "xoffset or yoffset not multiple of 4");
             return false;
         }
         if (width - xoffset > tex->getWidth(target, level)
             || height - yoffset > tex->getHeight(target, level)) {
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "dimensions out of range");
+            synthesizeGLError(GL_INVALID_OPERATION, functionName, "dimensions out of range");
             return false;
         }
         return validateCompressedTexDimensions(functionName, TexSubImage2D, target, level, width, height, format);
     }
     default:
         return false;
     }
 }
 
 bool WebGLRenderingContext::validateDrawMode(const char* functionName, GC3Denum mode)
 {
     switch (mode) {
-    case GraphicsContext3D::POINTS:
-    case GraphicsContext3D::LINE_STRIP:
-    case GraphicsContext3D::LINE_LOOP:
-    case GraphicsContext3D::LINES:
-    case GraphicsContext3D::TRIANGLE_STRIP:
-    case GraphicsContext3D::TRIANGLE_FAN:
-    case GraphicsContext3D::TRIANGLES:
+    case GL_POINTS:
+    case GL_LINE_STRIP:
+    case GL_LINE_LOOP:
+    case GL_LINES:
+    case GL_TRIANGLE_STRIP:
+    case GL_TRIANGLE_FAN:
+    case GL_TRIANGLES:
         return true;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid draw mode");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid draw mode");
         return false;
     }
 }
 
 bool WebGLRenderingContext::validateStencilSettings(const char* functionName)
 {
     if (m_stencilMask != m_stencilMaskBack || m_stencilFuncRef != m_stencilFuncRefBack || m_stencilFuncMask != m_stencilFuncMaskBack) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "front and back stencils settings do not match");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "front and back stencils settings do not match");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateStencilOrDepthFunc(const char* functionName, GC3Denum func)
 {
     switch (func) {
-    case GraphicsContext3D::NEVER:
-    case GraphicsContext3D::LESS:
-    case GraphicsContext3D::LEQUAL:
-    case GraphicsContext3D::GREATER:
-    case GraphicsContext3D::GEQUAL:
-    case GraphicsContext3D::EQUAL:
-    case GraphicsContext3D::NOTEQUAL:
-    case GraphicsContext3D::ALWAYS:
+    case GL_NEVER:
+    case GL_LESS:
+    case GL_LEQUAL:
+    case GL_GREATER:
+    case GL_GEQUAL:
+    case GL_EQUAL:
+    case GL_NOTEQUAL:
+    case GL_ALWAYS:
         return true;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid function");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid function");
         return false;
     }
 }
 
 void WebGLRenderingContext::printGLErrorToConsole(const String& message)
 {
     if (!m_numGLErrorsToConsoleAllowed)
         return;
 
     --m_numGLErrorsToConsoleAllowed;
     printWarningToConsole(message);
 
     if (!m_numGLErrorsToConsoleAllowed)
         printWarningToConsole("WebGL: too many errors, no more errors will be reported to the console for this context.");
 
     return;
 }
 
 void WebGLRenderingContext::printWarningToConsole(const String& message)
 {
     if (!canvas())
         return;
     canvas()->document().addConsoleMessage(RenderingMessageSource, WarningMessageLevel, message);
 }
 
 bool WebGLRenderingContext::validateFramebufferFuncParameters(const char* functionName, GC3Denum target, GC3Denum attachment)
 {
-    if (target != GraphicsContext3D::FRAMEBUFFER) {
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid target");
+    if (target != GL_FRAMEBUFFER) {
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid target");
         return false;
     }
     switch (attachment) {
-    case GraphicsContext3D::COLOR_ATTACHMENT0:
-    case GraphicsContext3D::DEPTH_ATTACHMENT:
-    case GraphicsContext3D::STENCIL_ATTACHMENT:
-    case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT:
+    case GL_COLOR_ATTACHMENT0:
+    case GL_DEPTH_ATTACHMENT:
+    case GL_STENCIL_ATTACHMENT:
+    case GC3D_DEPTH_STENCIL_ATTACHMENT:
         break;
     default:
         if (m_webglDrawBuffers
-            && attachment > GraphicsContext3D::COLOR_ATTACHMENT0
-            && attachment < static_cast<GC3Denum>(GraphicsContext3D::COLOR_ATTACHMENT0 + maxColorAttachments()))
+            && attachment > GL_COLOR_ATTACHMENT0
+            && attachment < static_cast<GC3Denum>(GL_COLOR_ATTACHMENT0 + maxColorAttachments()))
             break;
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid attachment");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid attachment");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateBlendEquation(const char* functionName, GC3Denum mode)
 {
     switch (mode) {
-    case GraphicsContext3D::FUNC_ADD:
-    case GraphicsContext3D::FUNC_SUBTRACT:
-    case GraphicsContext3D::FUNC_REVERSE_SUBTRACT:
+    case GL_FUNC_ADD:
+    case GL_FUNC_SUBTRACT:
+    case GL_FUNC_REVERSE_SUBTRACT:
         return true;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid mode");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid mode");
         return false;
     }
 }
 
 bool WebGLRenderingContext::validateBlendFuncFactors(const char* functionName, GC3Denum src, GC3Denum dst)
 {
-    if (((src == GraphicsContext3D::CONSTANT_COLOR || src == GraphicsContext3D::ONE_MINUS_CONSTANT_COLOR)
-         && (dst == GraphicsContext3D::CONSTANT_ALPHA || dst == GraphicsContext3D::ONE_MINUS_CONSTANT_ALPHA))
-        || ((dst == GraphicsContext3D::CONSTANT_COLOR || dst == GraphicsContext3D::ONE_MINUS_CONSTANT_COLOR)
-            && (src == GraphicsContext3D::CONSTANT_ALPHA || src == GraphicsContext3D::ONE_MINUS_CONSTANT_ALPHA))) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "incompatible src and dst");
+    if (((src == GL_CONSTANT_COLOR || src == GL_ONE_MINUS_CONSTANT_COLOR)
+        && (dst == GL_CONSTANT_ALPHA || dst == GL_ONE_MINUS_CONSTANT_ALPHA))
+        || ((dst == GL_CONSTANT_COLOR || dst == GL_ONE_MINUS_CONSTANT_COLOR)
+        && (src == GL_CONSTANT_ALPHA || src == GL_ONE_MINUS_CONSTANT_ALPHA))) {
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "incompatible src and dst");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateCapability(const char* functionName, GC3Denum cap)
 {
     switch (cap) {
-    case GraphicsContext3D::BLEND:
-    case GraphicsContext3D::CULL_FACE:
-    case GraphicsContext3D::DEPTH_TEST:
-    case GraphicsContext3D::DITHER:
-    case GraphicsContext3D::POLYGON_OFFSET_FILL:
-    case GraphicsContext3D::SAMPLE_ALPHA_TO_COVERAGE:
-    case GraphicsContext3D::SAMPLE_COVERAGE:
-    case GraphicsContext3D::SCISSOR_TEST:
-    case GraphicsContext3D::STENCIL_TEST:
+    case GL_BLEND:
+    case GL_CULL_FACE:
+    case GL_DEPTH_TEST:
+    case GL_DITHER:
+    case GL_POLYGON_OFFSET_FILL:
+    case GL_SAMPLE_ALPHA_TO_COVERAGE:
+    case GL_SAMPLE_COVERAGE:
+    case GL_SCISSOR_TEST:
+    case GL_STENCIL_TEST:
         return true;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid capability");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid capability");
         return false;
     }
 }
 
 bool WebGLRenderingContext::validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, Float32Array* v, GC3Dsizei requiredMinSize)
 {
     if (!v) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no array");
         return false;
     }
     return validateUniformMatrixParameters(functionName, location, false, v->data(), v->length(), requiredMinSize);
 }
 
 bool WebGLRenderingContext::validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, Int32Array* v, GC3Dsizei requiredMinSize)
 {
     if (!v) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no array");
         return false;
     }
     return validateUniformMatrixParameters(functionName, location, false, v->data(), v->length(), requiredMinSize);
 }
 
 bool WebGLRenderingContext::validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, void* v, GC3Dsizei size, GC3Dsizei requiredMinSize)
 {
     return validateUniformMatrixParameters(functionName, location, false, v, size, requiredMinSize);
 }
 
 bool WebGLRenderingContext::validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* v, GC3Dsizei requiredMinSize)
 {
     if (!v) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no array");
         return false;
     }
     return validateUniformMatrixParameters(functionName, location, transpose, v->data(), v->length(), requiredMinSize);
 }
 
 bool WebGLRenderingContext::validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation* location, GC3Dboolean transpose, void* v, GC3Dsizei size, GC3Dsizei requiredMinSize)
 {
     if (!location)
         return false;
     if (location->program() != m_currentProgram) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "location is not from current program");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "location is not from current program");
         return false;
     }
     if (!v) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no array");
         return false;
     }
     if (transpose) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "transpose not FALSE");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "transpose not FALSE");
         return false;
     }
     if (size < requiredMinSize || (size % requiredMinSize)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "invalid size");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "invalid size");
         return false;
     }
     return true;
 }
 
 WebGLBuffer* WebGLRenderingContext::validateBufferDataParameters(const char* functionName, GC3Denum target, GC3Denum usage)
 {
     WebGLBuffer* buffer = 0;
     switch (target) {
-    case GraphicsContext3D::ELEMENT_ARRAY_BUFFER:
+    case GL_ELEMENT_ARRAY_BUFFER:
         buffer = m_boundVertexArrayObject->boundElementArrayBuffer().get();
         break;
-    case GraphicsContext3D::ARRAY_BUFFER:
+    case GL_ARRAY_BUFFER:
         buffer = m_boundArrayBuffer.get();
         break;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid target");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid target");
         return 0;
     }
     if (!buffer) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "no buffer");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "no buffer");
         return 0;
     }
     switch (usage) {
-    case GraphicsContext3D::STREAM_DRAW:
-    case GraphicsContext3D::STATIC_DRAW:
-    case GraphicsContext3D::DYNAMIC_DRAW:
+    case GL_STREAM_DRAW:
+    case GL_STATIC_DRAW:
+    case GL_DYNAMIC_DRAW:
         return buffer;
     }
-    synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid usage");
+    synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid usage");
     return 0;
 }
 
 bool WebGLRenderingContext::validateHTMLImageElement(const char* functionName, HTMLImageElement* image, ExceptionState& exceptionState)
 {
     if (!image || !image->cachedImage()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no image");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no image");
         return false;
     }
     const KURL& url = image->cachedImage()->response().url();
     if (url.isNull() || url.isEmpty() || !url.isValid()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "invalid image");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "invalid image");
         return false;
     }
     if (wouldTaintOrigin(image)) {
         exceptionState.throwSecurityError("The cross-origin image at " + url.elidedString() + " may not be loaded.");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateHTMLCanvasElement(const char* functionName, HTMLCanvasElement* canvas, ExceptionState& exceptionState)
 {
     if (!canvas || !canvas->buffer()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no canvas");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no canvas");
         return false;
     }
     if (wouldTaintOrigin(canvas)) {
         exceptionState.throwSecurityError("Tainted canvases may not be loaded.");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateHTMLVideoElement(const char* functionName, HTMLVideoElement* video, ExceptionState& exceptionState)
 {
     if (!video || !video->videoWidth() || !video->videoHeight()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no video");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no video");
         return false;
     }
     if (wouldTaintOrigin(video)) {
         exceptionState.throwSecurityError("The video element contains cross-origin data, and may not be loaded.");
         return false;
     }
     return true;
 }
 
 bool WebGLRenderingContext::validateDrawArrays(const char* functionName, GC3Denum mode, GC3Dint first, GC3Dsizei count)
 {
     if (isContextLost() || !validateDrawMode(functionName, mode))
         return false;
 
     if (!validateStencilSettings(functionName))
         return false;
 
     if (first < 0 || count < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "first or count < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "first or count < 0");
         return false;
     }
 
     if (!count) {
         markContextChanged();
         return false;
     }
 
     if (!validateRenderingState()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attribs not setup correctly");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "attribs not setup correctly");
         return false;
     }
 
     const char* reason = "framebuffer incomplete";
     if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), &reason)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, functionName, reason);
+        synthesizeGLError(GL_INVALID_FRAMEBUFFER_OPERATION, functionName, reason);
         return false;
     }
 
     return true;
 }
 
 bool WebGLRenderingContext::validateDrawElements(const char* functionName, GC3Denum mode, GC3Dsizei count, GC3Denum type, long long offset)
 {
     if (isContextLost() || !validateDrawMode(functionName, mode))
         return false;
 
     if (!validateStencilSettings(functionName))
         return false;
 
     switch (type) {
-    case GraphicsContext3D::UNSIGNED_BYTE:
-    case GraphicsContext3D::UNSIGNED_SHORT:
+    case GL_UNSIGNED_BYTE:
+    case GL_UNSIGNED_SHORT:
         break;
-    case GraphicsContext3D::UNSIGNED_INT:
+    case GL_UNSIGNED_INT:
         if (m_oesElementIndexUint)
             break;
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid type");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid type");
         return false;
     default:
-        synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid type");
+        synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid type");
         return false;
     }
 
     if (count < 0 || offset < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "count or offset < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "count or offset < 0");
         return false;
     }
 
     if (!count) {
         markContextChanged();
         return false;
     }
 
     if (!m_boundVertexArrayObject->boundElementArrayBuffer()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "no ELEMENT_ARRAY_BUFFER bound");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "no ELEMENT_ARRAY_BUFFER bound");
         return false;
     }
 
     if (!validateRenderingState()) {
-        synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attribs not setup correctly");
+        synthesizeGLError(GL_INVALID_OPERATION, functionName, "attribs not setup correctly");
         return false;
     }
 
     const char* reason = "framebuffer incomplete";
     if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), &reason)) {
-        synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, functionName, reason);
+        synthesizeGLError(GL_INVALID_FRAMEBUFFER_OPERATION, functionName, reason);
         return false;
     }
 
     return true;
 }
 
 // Helper function to validate draw*Instanced calls
 bool WebGLRenderingContext::validateDrawInstanced(const char* functionName, GC3Dsizei primcount)
 {
     if (primcount < 0) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "primcount < 0");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "primcount < 0");
         return false;
     }
 
     // Ensure at least one enabled vertex attrib has a divisor of 0.
     for (unsigned i = 0; i < m_onePlusMaxEnabledAttribIndex; ++i) {
         const WebGLVertexArrayObjectOES::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(i);
         if (state.enabled && !state.divisor)
             return true;
     }
 
-    synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "at least one enabled attribute must have a divisor of 0");
+    synthesizeGLError(GL_INVALID_OPERATION, functionName, "at least one enabled attribute must have a divisor of 0");
     return false;
 }
 
 void WebGLRenderingContext::vertexAttribfImpl(const char* functionName, GC3Duint index, GC3Dsizei expectedSize, GC3Dfloat v0, GC3Dfloat v1, GC3Dfloat v2, GC3Dfloat v3)
 {
     if (isContextLost())
         return;
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "index out of range");
         return;
     }
     // In GL, we skip setting vertexAttrib0 values.
     switch (expectedSize) {
     case 1:
         m_context->vertexAttrib1f(index, v0);
         break;
     case 2:
         m_context->vertexAttrib2f(index, v0, v1);
         break;
     case 3:
         m_context->vertexAttrib3f(index, v0, v1, v2);
         break;
     case 4:
         m_context->vertexAttrib4f(index, v0, v1, v2, v3);
         break;
     }
     VertexAttribValue& attribValue = m_vertexAttribValue[index];
     attribValue.value[0] = v0;
     attribValue.value[1] = v1;
     attribValue.value[2] = v2;
     attribValue.value[3] = v3;
 }
 
 void WebGLRenderingContext::vertexAttribfvImpl(const char* functionName, GC3Duint index, Float32Array* v, GC3Dsizei expectedSize)
 {
     if (isContextLost())
         return;
     if (!v) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no array");
         return;
     }
     vertexAttribfvImpl(functionName, index, v->data(), v->length(), expectedSize);
 }
 
 void WebGLRenderingContext::vertexAttribfvImpl(const char* functionName, GC3Duint index, GC3Dfloat* v, GC3Dsizei size, GC3Dsizei expectedSize)
 {
     if (isContextLost())
         return;
     if (!v) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "no array");
         return;
     }
     if (size < expectedSize) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "invalid size");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "invalid size");
         return;
     }
     if (index >= m_maxVertexAttribs) {
-        synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "index out of range");
+        synthesizeGLError(GL_INVALID_VALUE, functionName, "index out of range");
         return;
     }
     // In GL, we skip setting vertexAttrib0 values.
     switch (expectedSize) {
     case 1:
         m_context->vertexAttrib1fv(index, v);
         break;
     case 2:
         m_context->vertexAttrib2fv(index, v);
         break;
@@ skipping 41 matching lines @@
 
     if (!frame->loader().client()->allowWebGL(settings && settings->webGLEnabled()))
         return;
 
     // Reset the context attributes back to the requested attributes and re-apply restrictions
     m_attributes = adjustAttributes(m_requestedAttributes, settings);
 
     RefPtr<GraphicsContext3D> context(GraphicsContext3D::create(m_attributes));
 
     if (!context) {
-        if (m_contextLostMode == RealLostContext)
+        if (m_contextLostMode == RealLostContext) {
             m_restoreTimer.startOneShot(secondsBetweenRestoreAttempts);
-        else
+        } else {
             // This likely shouldn't happen but is the best way to report it to the WebGL app.
-            synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "", "error restoring context");
+            synthesizeGLError(GL_INVALID_OPERATION, "", "error restoring context");
+        }
         return;
     }
 
     RefPtr<WebGLRenderingContextEvictionManager> contextEvictionManager = adoptRef(new WebGLRenderingContextEvictionManager());
 
     // Construct a new drawing buffer with the new GraphicsContext3D.
     m_drawingBuffer->releaseResources();
     DrawingBuffer::PreserveDrawingBuffer preserve = m_attributes.preserveDrawingBuffer ? DrawingBuffer::Preserve : DrawingBuffer::Discard;
     m_drawingBuffer = DrawingBuffer::create(context.get(), clampedCanvasSize(), preserve, contextEvictionManager.release());
 
@@ skipping 53 matching lines @@
 {
     for (int i = idx; i > 0; --i)
         m_buffers[i].swap(m_buffers[i-1]);
 }
 
 namespace {
 
     String GetErrorString(GC3Denum error)
     {
         switch (error) {
-        case GraphicsContext3D::INVALID_ENUM:
+        case GL_INVALID_ENUM:
             return "INVALID_ENUM";
-        case GraphicsContext3D::INVALID_VALUE:
+        case GL_INVALID_VALUE:
             return "INVALID_VALUE";
-        case GraphicsContext3D::INVALID_OPERATION:
+        case GL_INVALID_OPERATION:
             return "INVALID_OPERATION";
-        case GraphicsContext3D::OUT_OF_MEMORY:
+        case GL_OUT_OF_MEMORY:
             return "OUT_OF_MEMORY";
-        case GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION:
+        case GL_INVALID_FRAMEBUFFER_OPERATION:
             return "INVALID_FRAMEBUFFER_OPERATION";
-        case GraphicsContext3D::CONTEXT_LOST_WEBGL:
+        case GC3D_CONTEXT_LOST_WEBGL:
             return "CONTEXT_LOST_WEBGL";
         default:
             return String::format("WebGL ERROR(0x%04X)", error);
         }
     }
 
 } // namespace anonymous
 
 void WebGLRenderingContext::synthesizeGLError(GC3Denum error, const char* functionName, const char* description, ConsoleDisplayPreference display)
 {
@@ skipping 23 matching lines @@
 void WebGLRenderingContext::applyStencilTest()
 {
     bool haveStencilBuffer = false;
 
     if (m_framebufferBinding)
         haveStencilBuffer = m_framebufferBinding->hasStencilBuffer();
     else {
         RefPtr<WebGLContextAttributes> attributes = getContextAttributes();
         haveStencilBuffer = attributes->stencil();
     }
-    enableOrDisable(GraphicsContext3D::STENCIL_TEST,
+    enableOrDisable(GL_STENCIL_TEST,
                     m_stencilEnabled && haveStencilBuffer);
 }
 
 void WebGLRenderingContext::enableOrDisable(GC3Denum capability, bool enable)
 {
     if (isContextLost())
         return;
     if (enable)
         m_context->enable(capability);
     else
@@ skipping 27 matching lines @@
     return m_maxColorAttachments;
 }
 
 void WebGLRenderingContext::setBackDrawBuffer(GC3Denum buf)
 {
     m_backDrawBuffer = buf;
 }
 
 void WebGLRenderingContext::restoreCurrentFramebuffer()
 {
-    bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_framebufferBinding.get());
+    bindFramebuffer(GL_FRAMEBUFFER, m_framebufferBinding.get());
 }
 
 void WebGLRenderingContext::restoreCurrentTexture2D()
 {
-    bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureUnits[m_activeTextureUnit].m_texture2DBinding.get());
+    bindTexture(GL_TEXTURE_2D, m_textureUnits[m_activeTextureUnit].m_texture2DBinding.get());
 }
 
 void WebGLRenderingContext::multisamplingChanged(bool enabled)
 {
     if (m_multisamplingAllowed != enabled) {
         m_multisamplingAllowed = enabled;
         forceLostContext(WebGLRenderingContext::AutoRecoverSyntheticLostContext);
     }
 }
 
@@ skipping 18 matching lines @@
         if (m_textureUnits[i].m_texture2DBinding
             || m_textureUnits[i].m_textureCubeMapBinding) {
             m_onePlusMaxNonDefaultTextureUnit = i + 1;
             return;
         }
     }
     m_onePlusMaxNonDefaultTextureUnit = 0;
 }
 
 } // namespace WebCore