Remove all remaining traces of MessageLoopProxy.

chromecast/renderer/cast_render_thread_observer.cc

 // Copyright 2014 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 "chromecast/renderer/cast_render_thread_observer.h"
 
 #include "build/build_config.h"
 #include "chromecast/renderer/media/capabilities_message_filter.h"
 #include "chromecast/renderer/media/cma_message_filter_proxy.h"
 #include "content/public/renderer/render_thread.h"
 
 namespace chromecast {
 namespace shell {
 
 CastRenderThreadObserver::CastRenderThreadObserver() {
   content::RenderThread* thread = content::RenderThread::Get();
   thread->AddObserver(this);
   CreateCustomFilters();
 }
 
 CastRenderThreadObserver::~CastRenderThreadObserver() {
   // CastRenderThreadObserver outlives content::RenderThread.
   // No need to explicitly call RemoveObserver in teardown.
 }
 
 void CastRenderThreadObserver::CreateCustomFilters() {
   content::RenderThread* thread = content::RenderThread::Get();
 #if !defined(OS_ANDROID)
   cma_message_filter_proxy_ =
-      new media::CmaMessageFilterProxy(thread->GetIOMessageLoopProxy());
+      new media::CmaMessageFilterProxy(thread->GetIOTaskRunner());
   thread->AddFilter(cma_message_filter_proxy_.get());
 #endif  // !defined(OS_ANDROID)
   capabilities_message_filter_ = new CapabilitiesMessageFilter;
   thread->AddFilter(capabilities_message_filter_.get());
 }
 
 void CastRenderThreadObserver::OnRenderProcessShutdown() {
   content::RenderThread* thread = content::RenderThread::Get();
 #if !defined(OS_ANDROID)
   if (cma_message_filter_proxy_.get()) {
     thread->RemoveFilter(cma_message_filter_proxy_.get());
     cma_message_filter_proxy_ = nullptr;
   }
 #endif  // !defined(OS_ANDROID)
   if (capabilities_message_filter_.get()) {
     thread->RemoveFilter(capabilities_message_filter_.get());
     capabilities_message_filter_ = nullptr;
   }
 }
 
 }  // namespace shell
 }  // namespace chromecast