Move audio decoding to protocol layer

remoting/protocol/webrtc_connection_to_host.cc

Index: remoting/protocol/webrtc_connection_to_host.cc
diff --git a/remoting/protocol/webrtc_connection_to_host.cc b/remoting/protocol/webrtc_connection_to_host.cc
index 3ef3d44e7e73c50fc410961515c74cc9dea27ef3..1ab485b3d7535eb3f27ac446c48a8900d592cfed 100644
--- a/remoting/protocol/webrtc_connection_to_host.cc
+++ b/remoting/protocol/webrtc_connection_to_host.cc
@@ -72,7 +72,9 @@ void WebrtcConnectionToHost::set_video_renderer(VideoRenderer* video_renderer) {
   video_renderer_ = video_renderer;
 }
 
-void WebrtcConnectionToHost::set_audio_stub(AudioStub* audio_stub) {
+void WebrtcConnectionToHost::InitializeAudio(
+    scoped_refptr<base::SingleThreadTaskRunner> audio_decode_task_runner,
+    base::WeakPtr<AudioStub> audio_stub) {
   NOTIMPLEMENTED();

[Jamie, 2016/10/04 00:25:38]

Is NOTIMPLEMENTED appropriate here? NOTIMPLEMENTED suggests to me that it should
be implemented (and it logs a warning to remind you to do so), but based on your
CL comment, I think this is intentionally a no-op for webrtc, so an empty method
body seems more appropriate.

[Sergey Ulanov, 2016/10/04 00:42:22]

NOIMPLEMENTED is appropriate here. It will be implemented in a separate CL. This
class won't be using AudioDecodeScheduler because webrtc takes care of audio
decoding, but it will need to store audio_stub and audio_decode_task_runner
here.

 }