Add opus audio codec support in remoting

remoting/host/client_session.cc

Index: remoting/host/client_session.cc
diff --git a/remoting/host/client_session.cc b/remoting/host/client_session.cc
index 74002877a3ff830b6c286ea4d079ec4aee9c0783..7c7e0ebc62034bafc6b7099ebedced125ab9d47e 100644
--- a/remoting/host/client_session.cc
+++ b/remoting/host/client_session.cc
@@ -8,6 +8,7 @@
 
 #include "base/message_loop_proxy.h"
 #include "remoting/codec/audio_encoder.h"
+#include "remoting/codec/audio_encoder_opus.h"
 #include "remoting/codec/audio_encoder_speex.h"
 #include "remoting/codec/audio_encoder_verbatim.h"
 #include "remoting/codec/video_encoder.h"
@@ -303,6 +304,8 @@ scoped_ptr<AudioEncoder> ClientSession::CreateAudioEncoder(
     return scoped_ptr<AudioEncoder>(new AudioEncoderVerbatim());
   } else if (audio_config.codec == protocol::ChannelConfig::CODEC_SPEEX) {
     return scoped_ptr<AudioEncoder>(new AudioEncoderSpeex());
+  } else if (audio_config.codec == protocol::ChannelConfig::CODEC_OPUS) {
+    return scoped_ptr<AudioEncoder>(new AudioEncoderOpus());
   }
 
   NOTIMPLEMENTED();