Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/EXTFragDepth.cpp

 /*
  * Copyright (C) 2013 Google 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
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 
 #include "core/html/canvas/EXTFragDepth.h"
 
 #include "core/platform/graphics/Extensions3D.h"
 
 namespace WebCore {
 
-EXTFragDepth::EXTFragDepth(WebGLRenderingContext* context)
+EXTFragDepth::EXTFragDepth(WebGLRenderingContextBase* context)
     : WebGLExtension(context)
 {
     ScriptWrappable::init(this);
     context->graphicsContext3D()->getExtensions()->ensureEnabled("GL_EXT_frag_depth");
 }
 
 EXTFragDepth::~EXTFragDepth()
 {
 }
 
 WebGLExtension::ExtensionName EXTFragDepth::getName() const
 {
     return EXTFragDepthName;
 }
 
-PassRefPtr<EXTFragDepth> EXTFragDepth::create(WebGLRenderingContext* context)
+PassRefPtr<EXTFragDepth> EXTFragDepth::create(WebGLRenderingContextBase* context)
 {
     return adoptRef(new EXTFragDepth(context));
 }
 
-bool EXTFragDepth::supported(WebGLRenderingContext* context)
+bool EXTFragDepth::supported(WebGLRenderingContextBase* context)
 {
     Extensions3D* extensions = context->graphicsContext3D()->getExtensions();
     return extensions->supports("GL_EXT_frag_depth");
 }
 
 const char* EXTFragDepth::getExtensionName()
 {
     return "EXT_frag_depth";
 }
 
 } // namespace WebCore