Implements AudioMessageFilter as member in RenderThread

content/renderer/render_thread.cc

Index: content/renderer/render_thread.cc
===================================================================
--- content/renderer/render_thread.cc	(revision 90366)
+++ 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 +174,9 @@
       VideoCaptureMessageFilterCreator::SharedFilter();
   AddFilter(video_capture_message_filter);
 
+  audio_message_filter_ = new AudioMessageFilter();
+  AddFilter(audio_message_filter_.get());
+
   content::GetContentClient()->renderer()->RenderThreadStarted();
 
   TRACE_EVENT_END_ETW("RenderThread::Init", 0, "");
@@ -187,13 +191,16 @@
     web_database_observer_impl_->WaitForAllDatabasesToClose();
 
   // Shutdown in reverse of the initialization order.
-  RemoveFilter(db_message_filter_.get());
-  db_message_filter_ = NULL;
+  RemoveFilter(audio_message_filter_.get());
+  audio_message_filter_ = NULL;
 
   VideoCaptureMessageFilter* video_capture_message_filter =
       VideoCaptureMessageFilterCreator::SharedFilter();
   RemoveFilter(video_capture_message_filter);
 
+  RemoveFilter(db_message_filter_.get());
+  db_message_filter_ = NULL;
+
   // Shutdown the file thread if it's running.
   if (file_thread_.get())
     file_thread_->Stop();