Avoid SEGVing in WebGraphicsContext3DCommandBufferImpl::IsCommandBufferContextLost()

content/renderer/render_thread_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_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 714 matching lines @@
 }
 
 void RenderThreadImpl::PostponeIdleNotification() {
   idle_notifications_to_skip_ = 2;
 }
 
 base::WeakPtr<WebGraphicsContext3DCommandBufferImpl>
 RenderThreadImpl::GetGpuVDAContext3D() {
   // If we already handed out a pointer to a context and it's been lost, create
   // a new one.
-  if (gpu_vda_context3d_.get() &&
-      gpu_vda_context3d_->IsCommandBufferContextLost()) {
+  if (gpu_vda_context3d_.get() && gpu_vda_context3d_->isContextLost()) {
     if (compositor_thread()) {
       compositor_thread()->GetWebThread()->message_loop()->DeleteSoon(
           FROM_HERE, gpu_vda_context3d_.release());
     } else {
       gpu_vda_context3d_.reset();
     }
   }
   if (!gpu_vda_context3d_.get()) {
     gpu_vda_context3d_.reset(
         WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
@@ skipping 278 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }