First step towards moving AudioDevice from content/ to media/audio.

content/renderer/media/audio_device_factory.cc

Index: content/renderer/media/audio_device_factory.cc
diff --git a/content/renderer/media/audio_device_factory.cc b/content/renderer/media/audio_device_factory.cc
index ee7906ff93e592b24f91d59fe32f6fb25c24f8e4..670f30c44669dcf2796c9935207406170324992a 100644
--- a/content/renderer/media/audio_device_factory.cc
+++ b/content/renderer/media/audio_device_factory.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "content/common/child_process.h"
 #include "content/renderer/media/audio_device.h"
+#include "content/renderer/media/audio_message_filter.h"
 
 namespace content {
 
@@ -19,6 +20,7 @@ media::AudioRendererSink* AudioDeviceFactory::Create() {
     return factory_->CreateAudioDevice();
   }
   return new AudioDevice(
+      AudioMessageFilter::Get(),
       ChildProcess::current()->io_message_loop()->message_loop_proxy());
 }