Moved GPU related files in content/renderer into gpu subdirectory.

content/renderer/gpu_surface_proxy.cc

-// Copyright (c) 2011 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 "content/renderer/gpu_surface_proxy.h"
-#include "ui/gfx/size.h"
-
-GpuSurfaceProxy::GpuSurfaceProxy(
-    IPC::Channel::Sender* channel,
-    int route_id)
-    : channel_(channel),
-      route_id_(route_id) {
-}
-
-GpuSurfaceProxy::~GpuSurfaceProxy() {
-}
-
-bool GpuSurfaceProxy::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  //IPC_BEGIN_MESSAGE_MAP(GpuSurfaceProxy, message)
-  //  IPC_MESSAGE_UNHANDLED(handled = false)
-  //IPC_END_MESSAGE_MAP()
-  DCHECK(handled);
-  return handled;
-}
-
-void GpuSurfaceProxy::OnChannelError() {
-  // Prevent any further messages from being sent.
-  channel_ = NULL;
-}