Remove create/delete methods from WebGraphicsContext3D.

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp

Index: third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp b/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
index e6864d459e5de4d37a5b0bcc7d79035ee0167144..e23fd131b29d83212f79edc7d535dd7f7848e27e 100644
--- a/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
+++ b/third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.cpp
@@ -276,12 +276,7 @@ bool DrawingBuffer::prepareMailbox(WebExternalTextureMailbox* outMailbox, WebExt
 
     // No buffer available to recycle, create a new one.
     if (!frontColorBufferMailbox) {
-        TextureInfo newTexture = createTextureAndAllocateMemory(m_size);
-        // Bad things happened, abandon ship.
-        if (!newTexture.textureId)
-            return false;
-
-        frontColorBufferMailbox = createNewMailbox(newTexture);
+        frontColorBufferMailbox = createNewMailbox(createTextureAndAllocateMemory(m_size));
     }
 
     if (m_preserveDrawingBuffer == Discard) {
@@ -439,7 +434,7 @@ void DrawingBuffer::deleteMailbox(const WebExternalTextureMailbox& mailbox)
 
             deleteChromiumImageForTexture(&m_textureMailboxes[i]->textureInfo);
 
-            m_context->deleteTexture(m_textureMailboxes[i]->textureInfo.textureId);
+            m_gl->DeleteTextures(1, &m_textureMailboxes[i]->textureInfo.textureId);
             m_textureMailboxes.remove(i);
             return;
         }
@@ -469,7 +464,7 @@ bool DrawingBuffer::initialize(const IntSize& size)
     }
     m_sampleCount = std::min(4, maxSampleCount);
 
-    m_fbo = m_context->createFramebuffer();
+    m_gl->GenFramebuffers(1, &m_fbo);
 
     m_gl->BindFramebuffer(GL_FRAMEBUFFER, m_fbo);
     createSecondaryBuffers();
@@ -550,7 +545,7 @@ bool DrawingBuffer::copyToPlatformTexture(WebGraphicsContext3D* context, gpu::gl
 
     gl->CopyTextureCHROMIUM(sourceTexture, texture, internalFormat, destType, flipY, unpackPremultiplyAlphaNeeded, unpackUnpremultiplyAlphaNeeded);
 
-    context->deleteTexture(sourceTexture);
+    gl->DeleteTextures(1, &sourceTexture);
 
     const GLuint64 fenceSync = gl->InsertFenceSyncCHROMIUM();
 
@@ -601,20 +596,20 @@ void DrawingBuffer::beginDestruction()
         deleteMailbox(m_recycledMailboxQueue.takeLast());
 
     if (m_multisampleFBO)
-        m_context->deleteFramebuffer(m_multisampleFBO);
+        m_gl->DeleteFramebuffers(1, &m_multisampleFBO);
 
     if (m_fbo)
-        m_context->deleteFramebuffer(m_fbo);
+        m_gl->DeleteFramebuffers(1, &m_fbo);
 
     if (m_multisampleColorBuffer)
-        m_context->deleteRenderbuffer(m_multisampleColorBuffer);
+        m_gl->DeleteRenderbuffers(1, &m_multisampleColorBuffer);
 
     if (m_depthStencilBuffer)
-        m_context->deleteRenderbuffer(m_depthStencilBuffer);
+        m_gl->DeleteRenderbuffers(1, &m_depthStencilBuffer);
 
     if (m_colorBuffer.textureId) {
         deleteChromiumImageForTexture(&m_colorBuffer);
-        m_context->deleteTexture(m_colorBuffer.textureId);
+        m_gl->DeleteTextures(1, &m_colorBuffer.textureId);
     }
 
     setSize(IntSize());
@@ -632,16 +627,13 @@ void DrawingBuffer::beginDestruction()
 
 WebGLId DrawingBuffer::createColorTexture(const TextureParameters& parameters)
 {
-    WebGLId offscreenColorTexture = m_context->createTexture();
-    if (!offscreenColorTexture)
-        return 0;
-
+    GLuint offscreenColorTexture;
+    m_gl->GenTextures(1, &offscreenColorTexture);
     m_gl->BindTexture(parameters.target, offscreenColorTexture);
     m_gl->TexParameteri(parameters.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     m_gl->TexParameteri(parameters.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     m_gl->TexParameteri(parameters.target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
     m_gl->TexParameteri(parameters.target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-
     return offscreenColorTexture;
 }
 
@@ -649,9 +641,9 @@ void DrawingBuffer::createSecondaryBuffers()
 {
     // create a multisample FBO
     if (m_antiAliasingMode == MSAAExplicitResolve) {
-        m_multisampleFBO = m_context->createFramebuffer();
+        m_gl->GenFramebuffers(1, &m_multisampleFBO);
         m_gl->BindFramebuffer(GL_FRAMEBUFFER, m_multisampleFBO);
-        m_multisampleColorBuffer = m_context->createRenderbuffer();
+        m_gl->GenRenderbuffers(1, &m_multisampleColorBuffer);
     }
 }
 
@@ -692,7 +684,7 @@ void DrawingBuffer::resizeDepthStencil(const IntSize& size)
         return;
 
     if (!m_depthStencilBuffer)
-        m_depthStencilBuffer = m_context->createRenderbuffer();
+        m_gl->GenRenderbuffers(1, &m_depthStencilBuffer);
     m_gl->BindRenderbuffer(GL_RENDERBUFFER, m_depthStencilBuffer);
     if (m_antiAliasingMode == MSAAImplicitResolve)
         m_gl->RenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, m_sampleCount, GL_DEPTH24_STENCIL8_OES, size.width(), size.height());
@@ -878,9 +870,9 @@ bool DrawingBuffer::paintRenderingResultsToImageData(int& width, int& height, So
 
     WTF::ArrayBufferContents pixels(width * height, 4, WTF::ArrayBufferContents::NotShared, WTF::ArrayBufferContents::DontInitialize);
 
-    GLint fbo = 0;
+    GLuint fbo = 0;
     if (sourceBuffer == FrontBuffer && m_frontColorBuffer.texInfo.textureId) {
-        fbo = m_context->createFramebuffer();
+        m_gl->GenFramebuffers(1, &fbo);
         m_gl->BindFramebuffer(GL_FRAMEBUFFER, fbo);
         m_gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_frontColorBuffer.texInfo.parameters.target, m_frontColorBuffer.texInfo.textureId, 0);
     } else {
@@ -892,7 +884,7 @@ bool DrawingBuffer::paintRenderingResultsToImageData(int& width, int& height, So
 
     if (fbo) {
         m_gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_frontColorBuffer.texInfo.parameters.target, 0, 0);
-        m_context->deleteFramebuffer(fbo);
+        m_gl->DeleteFramebuffers(1, &fbo);
     }
 
     restoreFramebufferBindings();
@@ -982,11 +974,6 @@ DrawingBuffer::TextureInfo DrawingBuffer::createTextureAndAllocateMemory(const I
         return createDefaultTextureAndAllocateMemory(size);
 
     WebGLId textureId = createColorTexture(parameters);
-    if (!textureId) {
-        m_gl->DestroyImageCHROMIUM(imageId);
-        return createDefaultTextureAndAllocateMemory(size);
-    }
-
     m_gl->BindTexImage2DCHROMIUM(parameters.target, imageId);
 
     TextureInfo info;