Remove methods from WebGraphicsContext3D that wrap type casts.

third_party/WebKit/Source/modules/webgl/WebGLFenceSync.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/webgl/WebGLFenceSync.h"
 
+#include "gpu/command_buffer/client/gles2_interface.h"
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 
 namespace blink {
 
 WebGLSync* WebGLFenceSync::create(WebGL2RenderingContextBase* ctx, GLenum condition, GLbitfield flags)
 {
     return new WebGLFenceSync(ctx, condition, flags);
 }
 
 WebGLFenceSync::~WebGLFenceSync()
 {
 }
 
 WebGLFenceSync::WebGLFenceSync(WebGL2RenderingContextBase* ctx, GLenum condition, GLbitfield flags)
-    : WebGLSync(ctx, ctx->webContext()->fenceSync(condition, flags), GL_SYNC_FENCE)
+    : WebGLSync(ctx, ctx->contextGL()->FenceSync(condition, flags), GL_SYNC_FENCE)
 {
 }
 
 } // namespace blink