Remove GraphicsContext3D:: stubs from cc

cc/platform_color.h

Index: cc/platform_color.h
diff --git a/cc/platform_color.h b/cc/platform_color.h
index a3f3f354d670f9d31e729cc8b3bc870698ee8371..54a305c76d8b03762d13cd1c10e306b95a722e58 100644
--- a/cc/platform_color.h
+++ b/cc/platform_color.h
@@ -5,8 +5,8 @@
 #ifndef PlatformColor_h
 #define PlatformColor_h
 
-#include "Extensions3D.h"
-#include "GraphicsContext3D.h"
+#include "third_party/khronos/GLES2/gl2.h"
+#include "third_party/khronos/GLES2/gl2ext.h"
 #include "third_party/skia/include/core/SkTypes.h"
 #include <public/WebGraphicsContext3D.h>
 
@@ -14,21 +14,23 @@ namespace cc {
 
 class PlatformColor {
 public:
-    static GraphicsContext3D::SourceDataFormat format()
+    enum SourceDataFormat { SourceFormatRGBA8, SourceFormatBGRA8 };
+
+    static SourceDataFormat format()
     {
-        return SK_B32_SHIFT ? GraphicsContext3D::SourceFormatRGBA8 : GraphicsContext3D::SourceFormatBGRA8;
+        return SK_B32_SHIFT ? SourceFormatRGBA8 : SourceFormatBGRA8;
     }
 
     // Returns the most efficient texture format for this platform.
-    static GC3Denum bestTextureFormat(WebKit::WebGraphicsContext3D* context, bool supportsBGRA8888)
+    static GLenum bestTextureFormat(WebKit::WebGraphicsContext3D* context, bool supportsBGRA8888)
     {
-        GC3Denum textureFormat = GraphicsContext3D::RGBA;
+        GLenum textureFormat = GL_RGBA;
         switch (format()) {
-        case GraphicsContext3D::SourceFormatRGBA8:
+        case SourceFormatRGBA8:
             break;
-        case GraphicsContext3D::SourceFormatBGRA8:
+        case SourceFormatBGRA8:
             if (supportsBGRA8888)
-                textureFormat = Extensions3D::BGRA_EXT;
+                textureFormat = GL_BGRA_EXT;
             break;
         default:
             NOTREACHED();
@@ -39,13 +41,13 @@ public:
 
     // Return true if the given texture format has the same component order
     // as the color on this platform.
-    static bool sameComponentOrder(GC3Denum textureFormat)
+    static bool sameComponentOrder(GLenum textureFormat)
     {
         switch (format()) {
-        case GraphicsContext3D::SourceFormatRGBA8:
-            return textureFormat == GraphicsContext3D::RGBA;
-        case GraphicsContext3D::SourceFormatBGRA8:
-            return textureFormat == Extensions3D::BGRA_EXT;
+        case SourceFormatRGBA8:
+            return textureFormat == GL_RGBA;
+        case SourceFormatBGRA8:
+            return textureFormat == GL_BGRA_EXT;
         default:
             NOTREACHED();
             return false;