Remove WebGraphicsContext3D::getGLES2Interface().

third_party/WebKit/Source/modules/webgl/WebGLSync.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/WebGLSync.h"
 
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 
 namespace blink {
 
 WebGLSync::~WebGLSync()
 {
     // See the comment in WebGLObject::detachAndDeleteObject().
     detachAndDeleteObject();
 }
 
 WebGLSync::WebGLSync(WebGL2RenderingContextBase* ctx, GLsync object, GLenum objectType)
     : WebGLSharedObject(ctx)
     , m_object(object)
     , m_objectType(objectType)
 {
 }
 
-void WebGLSync::deleteObjectImpl(WebGraphicsContext3D* context3d, gpu::gles2::GLES2Interface* gl)
+void WebGLSync::deleteObjectImpl(gpu::gles2::GLES2Interface* gl)
 {
     gl->DeleteSync(m_object);
     m_object = 0;
 }
 
 } // namespace blink