Injectable audio encoders: voice_engine/channel changes.

webrtc/voice_engine/channel.h

Index: webrtc/voice_engine/channel.h
diff --git a/webrtc/voice_engine/channel.h b/webrtc/voice_engine/channel.h
index 13d8e49877a3d74f924dcded2105013babfb10ae..b43c7379b5ba060a15ebb4ce62c596de92002dd3 100644
--- a/webrtc/voice_engine/channel.h
+++ b/webrtc/voice_engine/channel.h
@@ -23,6 +23,7 @@
 #include "webrtc/common_types.h"
 #include "webrtc/modules/audio_coding/acm2/codec_manager.h"
 #include "webrtc/modules/audio_coding/acm2/rent_a_codec.h"
+#include "webrtc/modules/audio_coding/codecs/audio_encoder.h"
 #include "webrtc/modules/audio_coding/include/audio_coding_module.h"
 #include "webrtc/modules/audio_conference_mixer/include/audio_conference_mixer_defines.h"
 #include "webrtc/modules/audio_processing/rms_level.h"
@@ -172,6 +173,9 @@ class Channel
 
   void SetReceiveCodecs(const std::map<int, SdpAudioFormat>& codecs);
 
+  // Send using this encoder, with this payload type.
+  bool SetEncoder(int payload_type, std::unique_ptr<AudioEncoder> encoder);
+
   // API methods
 
   // VoEBase