Implements AudioMessageFilter as member in RenderThread

content/renderer/render_thread.cc

Index: content/renderer/render_thread.cc
===================================================================
--- content/renderer/render_thread.cc	(revision 89645)
+++ content/renderer/render_thread.cc	(working copy)
@@ -37,6 +37,7 @@
 #include "content/renderer/gpu/gpu_channel_host.h"
 #include "content/renderer/gpu/gpu_video_service_host.h"
 #include "content/renderer/indexed_db_dispatcher.h"
+#include "content/renderer/media/audio_message_filter.h"
 #include "content/renderer/media/video_capture_message_filter.h"
 #include "content/renderer/media/video_capture_message_filter_creator.h"
 #include "content/renderer/plugin_channel_host.h"
@@ -173,6 +174,8 @@
       VideoCaptureMessageFilterCreator::SharedFilter();
   AddFilter(video_capture_message_filter);
 
+  AddFilter(AudioMessageFilter::GetInstance());
+
   content::GetContentClient()->renderer()->RenderThreadStarted();
 
   TRACE_EVENT_END_ETW("RenderThread::Init", 0, "");
@@ -194,6 +197,8 @@
       VideoCaptureMessageFilterCreator::SharedFilter();
   RemoveFilter(video_capture_message_filter);
 
+  RemoveFilter(AudioMessageFilter::GetInstance());
+
   // Shutdown the file thread if it's running.
   if (file_thread_.get())
     file_thread_->Stop();