Removed "compositor" child window that was created by the GPU process.

content/common/gpu/gpu_channel_manager.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/common/gpu/gpu_channel_manager.h"
 
 #include <string>
 #include <vector>
 
 #include "app/win/scoped_com_initializer.h"
@@ skipping 31 matching lines @@
 bool GpuChannelManager::OnMessageReceived(const IPC::Message& msg) {
   bool msg_is_ok = true;
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(GpuChannelManager, msg, msg_is_ok)
     IPC_MESSAGE_HANDLER(GpuMsg_EstablishChannel, OnEstablishChannel)
     IPC_MESSAGE_HANDLER(GpuMsg_CloseChannel, OnCloseChannel)
     IPC_MESSAGE_HANDLER(GpuMsg_CreateViewCommandBuffer,
                         OnCreateViewCommandBuffer)
     IPC_MESSAGE_HANDLER(GpuMsg_Synchronize, OnSynchronize)
     IPC_MESSAGE_HANDLER(GpuMsg_VisibilityChanged, OnVisibilityChanged)
-#if defined(OS_MACOSX)
+#if defined(OS_LINUX) && !defined(TOUCH_UI) || defined(OS_WIN)
+    IPC_MESSAGE_HANDLER(GpuMsg_ResizeViewACK, OnResizeViewACK);
+#elif defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(GpuMsg_AcceleratedSurfaceBuffersSwappedACK,
                         OnAcceleratedSurfaceBuffersSwappedACK)
     IPC_MESSAGE_HANDLER(GpuMsg_DestroyCommandBuffer,
                         OnDestroyCommandBuffer)
 #endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
   return handled;
 }
 
@@ skipping 61 matching lines @@
 
   GpuChannelMap::const_iterator iter = gpu_channels_.find(renderer_id);
   if (iter != gpu_channels_.end()) {
     iter->second->CreateViewCommandBuffer(
         window, render_view_id, init_params, &route_id);
   }
 
   Send(new GpuHostMsg_CommandBufferCreated(route_id));
 }
 
+void GpuChannelManager::OnResizeViewACK(int32 renderer_id,
+                                        int32 command_buffer_route_id) {
+  GpuChannelMap::const_iterator iter = gpu_channels_.find(renderer_id);
+  if (iter == gpu_channels_.end())
+    return;
+  scoped_refptr<GpuChannel> channel = iter->second;
+
+  channel->ViewResized(command_buffer_route_id);
+}
+
 #if defined(OS_MACOSX)
 void GpuChannelManager::OnAcceleratedSurfaceBuffersSwappedACK(
     int renderer_id, int32 route_id, uint64 swap_buffers_count) {
   GpuChannelMap::const_iterator iter = gpu_channels_.find(renderer_id);
   if (iter == gpu_channels_.end())
     return;
   scoped_refptr<GpuChannel> channel = iter->second;
   channel->AcceleratedSurfaceBuffersSwapped(route_id, swap_buffers_count);
 }
+
 void GpuChannelManager::OnDestroyCommandBuffer(
     int renderer_id, int32 renderer_view_id) {
   GpuChannelMap::const_iterator iter = gpu_channels_.find(renderer_id);
   if (iter == gpu_channels_.end())
     return;
   scoped_refptr<GpuChannel> channel = iter->second;
   channel->DestroyCommandBufferByViewId(renderer_view_id);
 }
 #endif
 
 void GpuChannelManager::LoseAllContexts() {
   MessageLoop::current()->PostTask(
       FROM_HERE, method_factory_.NewRunnableMethod(
           &GpuChannelManager::OnLoseAllContexts));
 }
 
 void GpuChannelManager::OnLoseAllContexts() {
   gpu_channels_.clear();
 }