Fix lifecycle-vs-threads of GpuVDAContext3D.

content/renderer/render_view_impl.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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 2402 matching lines @@
   }
 
   // Accelerated video decode is not enabled by default on Linux.
   // crbug.com/137247
   bool use_accelerated_video_decode = false;
 #if defined(OS_CHROMEOS) || defined(OS_WIN)
   use_accelerated_video_decode = true;
 #endif
   use_accelerated_video_decode &= !CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableAcceleratedVideoDecode);
-  base::WeakPtr<WebGraphicsContext3DCommandBufferImpl> context3d =
+  WebGraphicsContext3DCommandBufferImpl* context3d =
       use_accelerated_video_decode ?
       RenderThreadImpl::current()->GetGpuVDAContext3D() :
-      base::WeakPtr<WebGraphicsContext3DCommandBufferImpl>();
+      NULL;
   if (context3d) {
     MessageLoop* factories_loop =
         RenderThreadImpl::current()->compositor_thread() ?
         RenderThreadImpl::current()->compositor_thread()->GetWebThread()
             ->message_loop() :
         MessageLoop::current();
     GpuChannelHost* gpu_channel_host =
         RenderThreadImpl::current()->EstablishGpuChannelSync(
             content::CAUSE_FOR_GPU_LAUNCH_VIDEODECODEACCELERATOR_INITIALIZE);
     collection->GetVideoDecoders()->push_back(new media::GpuVideoDecoder(
@@ skipping 3327 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_);
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_ = new JavaBridgeDispatcher(this);
 #endif
 }