Changed GL enums from GraphicsContext3D to standard versions (Take 2)

Source/web/tests/DrawingBufferTest.cpp

Index: Source/web/tests/DrawingBufferTest.cpp
diff --git a/Source/web/tests/DrawingBufferTest.cpp b/Source/web/tests/DrawingBufferTest.cpp
index dc8bd6971d0d2d6359001fb7fd4296ba5db5082a..6f127a36c956dd60074c3afdb45f0a4c92f31070 100644
--- a/Source/web/tests/DrawingBufferTest.cpp
+++ b/Source/web/tests/DrawingBufferTest.cpp
@@ -63,14 +63,14 @@ public:
 
     virtual void bindTexture(WGC3Denum target, WebGLId texture)
     {
-        if (target == GraphicsContext3D::TEXTURE_2D) {
+        if (target == GL_TEXTURE_2D) {
             m_boundTexture = texture;
         }
     }
 
     virtual void texImage2D(WGC3Denum target, WGC3Dint level, WGC3Denum internalformat, WGC3Dsizei width, WGC3Dsizei height, WGC3Dint border, WGC3Denum format, WGC3Denum type, const void* pixels)
     {
-        if (target == GraphicsContext3D::TEXTURE_2D && !level) {
+        if (target == GL_TEXTURE_2D && !level) {
             m_textureSizes.set(m_boundTexture, IntSize(width, height));
         }
     }
@@ -84,7 +84,7 @@ public:
 
     virtual void produceTextureCHROMIUM(WGC3Denum target, const WGC3Dbyte* mailbox)
     {
-        ASSERT_EQ(target, GraphicsContext3D::TEXTURE_2D);
+        ASSERT_EQ(target, static_cast<WGC3Denum>(GL_TEXTURE_2D));
         m_mostRecentlyProducedSize = m_textureSizes.get(m_boundTexture);
     }