Completely removed the Extensions3D class (Take 2)

Source/platform/graphics/GraphicsContext3D.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Mozilla Corporation. 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.
@@ skipping 448 matching lines @@
 
 DELEGATE_TO_WEBCONTEXT_1(deleteBuffer, Platform3DObject)
 DELEGATE_TO_WEBCONTEXT_1(deleteFramebuffer, Platform3DObject)
 DELEGATE_TO_WEBCONTEXT_1(deleteProgram, Platform3DObject)
 DELEGATE_TO_WEBCONTEXT_1(deleteRenderbuffer, Platform3DObject)
 DELEGATE_TO_WEBCONTEXT_1(deleteShader, Platform3DObject)
 DELEGATE_TO_WEBCONTEXT_1(deleteTexture, Platform3DObject)
 
 DELEGATE_TO_WEBCONTEXT_1(synthesizeGLError, GLenum)
 
-Extensions3D* GraphicsContext3D::extensions()
-{
-    if (!m_extensions)
-        m_extensions = adoptPtr(new Extensions3D(this));
-    return m_extensions.get();
-}
-
 bool GraphicsContext3D::texImage2DResourceSafe(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, GLint unpackAlignment)
 {
     ASSERT(unpackAlignment == 1 || unpackAlignment == 2 || unpackAlignment == 4 || unpackAlignment == 8);
     texImage2D(target, level, internalformat, width, height, border, format, type, 0);
     return true;
 }
 
 bool GraphicsContext3D::computeFormatAndTypeParameters(GLenum format, GLenum type, unsigned* componentsPerPixel, unsigned* bytesPerComponent)
 {
     switch (format) {
     case GL_ALPHA:
     case GL_LUMINANCE:
     case GL_DEPTH_COMPONENT:
     case GL_DEPTH_STENCIL_OES:
         *componentsPerPixel = 1;
         break;
     case GL_LUMINANCE_ALPHA:
         *componentsPerPixel = 2;
         break;
     case GL_RGB:
         *componentsPerPixel = 3;
         break;
     case GL_RGBA:
-    case Extensions3D::BGRA_EXT: // GL_EXT_texture_format_BGRA8888
+    case GL_BGRA_EXT: // GL_EXT_texture_format_BGRA8888
         *componentsPerPixel = 4;
         break;
     default:
         return false;
     }
     switch (type) {
     case GL_UNSIGNED_BYTE:
         *bytesPerComponent = sizeof(GLubyte);
         break;
     case GL_UNSIGNED_SHORT:
@@ skipping 283 matching lines @@
     return m_enabledExtensions.contains(mappedName);
 }
 
 bool GraphicsContext3D::isExtensionEnabled(const String& name)
 {
     initializeExtensions();
     String mappedName = mapExtensionName(name);
     return m_enabledExtensions.contains(mappedName);
 }
 
+bool GraphicsContext3D::canUseCopyTextureCHROMIUM(GLenum destFormat, GLenum destType, GLint level)
+{
+    // FIXME: restriction of (RGB || RGBA)/UNSIGNED_BYTE/(Level 0) should be lifted when
+    // WebGraphicsContext3D::copyTextureCHROMIUM(...) are fully functional.
+    if ((destFormat == GL_RGB || destFormat == GL_RGBA)
+        && destType == GL_UNSIGNED_BYTE
+        && !level)
+        return true;
+    return false;
+}
+
 void GraphicsContext3D::flipVertically(uint8_t* framebuffer, int width, int height)
 {
     m_scanline.resize(width * 4);
     uint8* scanline = &m_scanline[0];
     unsigned rowBytes = width * 4;
     unsigned count = height / 2;
     for (unsigned i = 0; i < count; i++) {
         uint8* rowA = framebuffer + i * rowBytes;
         uint8* rowB = framebuffer + (height - i - 1) * rowBytes;
         memcpy(scanline, rowB, rowBytes);
         memcpy(rowB, rowA, rowBytes);
         memcpy(rowA, scanline, rowBytes);
     }
 }
 
 } // namespace WebCore