Revert of Remove create/delete methods from WebGraphicsContext3D.

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

 // Copyright (c) 2014 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/CHROMIUMValuebuffer.h"
 
-#include "gpu/command_buffer/client/gles2_interface.h"
 #include "modules/webgl/WebGLRenderingContextBase.h"
 
 namespace blink {
 
 CHROMIUMValuebuffer* CHROMIUMValuebuffer::create(WebGLRenderingContextBase* ctx)
 {
     return new CHROMIUMValuebuffer(ctx);
 }
 
 CHROMIUMValuebuffer::~CHROMIUMValuebuffer()
 {
     // See the comment in WebGLObject::detachAndDeleteObject().
     detachAndDeleteObject();
 }
 
 CHROMIUMValuebuffer::CHROMIUMValuebuffer(WebGLRenderingContextBase* ctx)
     : WebGLSharedPlatform3DObject(ctx)
     , m_hasEverBeenBound(false)
 {
-    GLuint buffer;
-    ctx->contextGL()->GenValuebuffersCHROMIUM(1, &buffer);
-    setObject(buffer);
+    setObject(ctx->webContext()->createValuebufferCHROMIUM());
 }
 
 void CHROMIUMValuebuffer::deleteObjectImpl(WebGraphicsContext3D* context3d, gpu::gles2::GLES2Interface* gl)
 {
-    gl->DeleteValuebuffersCHROMIUM(1, &m_object);
+    context3d->deleteValuebufferCHROMIUM(m_object);
     m_object = 0;
 }
 
 } // namespace blink