Added piping for sending audio packets from host to client.

remoting/host/screen_recorder.h

Index: remoting/host/screen_recorder.h
diff --git a/remoting/host/screen_recorder.h b/remoting/host/screen_recorder.h
index 462ade79af53584a8a7e3effdc686aee2f9301f4..b3ae6b13141354e296af8872003ad2ddd954d936 100644
--- a/remoting/host/screen_recorder.h
+++ b/remoting/host/screen_recorder.h
@@ -17,6 +17,7 @@
 #include "remoting/base/encoder.h"
 #include "remoting/host/capturer.h"
 #include "remoting/host/capture_scheduler.h"
+#include "remoting/proto/audio.pb.h"
 #include "remoting/proto/video.pb.h"
 
 namespace base {
@@ -133,6 +134,8 @@ class ScreenRecorder : public base::RefCountedThreadSafe<ScreenRecorder> {
 
   void DoSendVideoPacket(scoped_ptr<VideoPacket> packet);
 
+  void DoSendAudioPacket(scoped_ptr<AudioPacket> packet);
+
   void DoSendInit(scoped_refptr<protocol::ConnectionToClient> connection,
                   int width, int height);
 
@@ -143,6 +146,8 @@ class ScreenRecorder : public base::RefCountedThreadSafe<ScreenRecorder> {
   // each last packet in a frame.
   void VideoFrameSentCallback();
 
+  void AudioSamplesSentCallback();
+
   // Send updated cursor shape to client.
   void DoSendCursorShape(scoped_ptr<protocol::CursorShapeInfo> cursor_shape);