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content/browser/renderer_host/gpu_message_filter.cc

 // Copyright (c) 2012 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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/browser/renderer_host/gpu_message_filter.h"
 
@@ skipping 34 matching lines @@
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kUIUseGPUProcess)) {
     // When using the GPU process for UI, we need to share renderer GL contexts
     // with the compositor context.
     share_contexts_ = true;
   }
 }
 
 GpuMessageFilter::~GpuMessageFilter() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  GpuProcessHost* host = GpuProcessHost::FromID(gpu_process_id_);
+  if (host)
+    host->UnregisterRenderWidgetHelper(render_process_id_);
 }
 
 bool GpuMessageFilter::OnMessageReceived(
     const IPC::Message& message,
     bool* message_was_ok) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(GpuMessageFilter, message, *message_was_ok)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_EstablishGpuChannel,
                                     OnEstablishGpuChannel)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_CreateViewCommandBuffer,
@@ skipping 39 matching lines @@
                                cause_for_gpu_launch);
     if (!host) {
       reply->set_reply_error();
       Send(reply);
       return;
     }
 
     gpu_process_id_ = host->host_id();
   }
 
+  host->RegisterRenderWidgetHelper(render_process_id_, render_widget_helper_);
+
   host->EstablishGpuChannel(
       render_process_id_,
       share_contexts_,
       base::Bind(&GpuMessageFilter::EstablishChannelCallback,
                  AsWeakPtr(),
                  reply));
 }
 
 void GpuMessageFilter::OnCreateViewCommandBuffer(
     int32 surface_id,
@@ skipping 57 matching lines @@
   Send(reply);
 }
 
 void GpuMessageFilter::CreateCommandBufferCallback(
     IPC::Message* reply, int32 route_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   GpuHostMsg_CreateViewCommandBuffer::WriteReplyParams(reply, route_id);
   Send(reply);
 }