Adds AudioDevice factory for all audio clients in Chrome

content/renderer/media/media_stream_impl.h

Index: content/renderer/media/media_stream_impl.h
diff --git a/content/renderer/media/media_stream_impl.h b/content/renderer/media/media_stream_impl.h
index fdb479b56cdc7daaef145b4fb889701165eeaabe..0d9d078c88d9ac516f33e747ba870d2fc52d81d8 100644
--- a/content/renderer/media/media_stream_impl.h
+++ b/content/renderer/media/media_stream_impl.h
@@ -54,6 +54,7 @@ class WebPeerConnectionHandler;
 class WebPeerConnectionHandlerClient;
 }
 
+class AudioDeviceFactoryInterface;
 class MediaStreamDispatcher;
 class MediaStreamDependencyFactory;
 class PeerConnectionHandlerBase;
@@ -82,7 +83,8 @@ class CONTENT_EXPORT MediaStreamImpl
       MediaStreamDispatcher* media_stream_dispatcher,
       content::P2PSocketDispatcher* p2p_socket_dispatcher,
       VideoCaptureImplManager* vc_manager,
-      MediaStreamDependencyFactory* dependency_factory);
+      MediaStreamDependencyFactory* dependency_factory,
+      AudioDeviceFactoryInterface* audio_device_factory);
   virtual ~MediaStreamImpl();
 
   virtual WebKit::WebPeerConnectionHandler* CreatePeerConnectionHandler(
@@ -221,6 +223,10 @@ class CONTENT_EXPORT MediaStreamImpl
   // for the lifetime of RenderView.
   content::P2PSocketDispatcher* p2p_socket_dispatcher_;
 
+  // audio_device_factory is a weak reference, owned by RenderView. It's valid
+  // for the lifetime of RenderView.
+  AudioDeviceFactoryInterface* audio_device_factory_;
+
   // We own network_manager_, must be deleted on the worker thread.
   // The network manager uses |p2p_socket_dispatcher_|.
   content::IpcNetworkManager* network_manager_;