Support for two audio codec lists down into WebRtcVoiceEngine.

webrtc/media/base/fakemediaengine.h

Index: webrtc/media/base/fakemediaengine.h
diff --git a/webrtc/media/base/fakemediaengine.h b/webrtc/media/base/fakemediaengine.h
index 1cddda867fdee1ae9981cc626cf510236d6a55e1..d09a1f7aec378adc6f371248d9b012e4e4cfb8eb 100644
--- a/webrtc/media/base/fakemediaengine.h
+++ b/webrtc/media/base/fakemediaengine.h
@@ -726,8 +726,11 @@ class FakeVoiceEngine : public FakeBaseEngine {
     channels_.erase(std::find(channels_.begin(), channels_.end(), channel));
   }
 
-  const std::vector<AudioCodec>& codecs() { return codecs_; }
-  void SetCodecs(const std::vector<AudioCodec> codecs) { codecs_ = codecs; }
+  // TODO(ossu): For proper testing, These should either individually settable
+  //             or the voice engine should reference mockable factories.
+  const std::vector<AudioCodec>& send_codecs() { return codecs_; }
+  const std::vector<AudioCodec>& recv_codecs() { return codecs_; }
+  void SetCodecs(const std::vector<AudioCodec>& codecs) { codecs_ = codecs; }
 
   bool GetOutputVolume(int* level) {
     *level = output_volume_;