Support for two audio codec lists down into WebRtcVoiceEngine.

webrtc/api/webrtcsession_unittest.cc

Index: webrtc/api/webrtcsession_unittest.cc
diff --git a/webrtc/api/webrtcsession_unittest.cc b/webrtc/api/webrtcsession_unittest.cc
index 34d82582c61ad54df6aa99641ae819e18dd74e6d..1264d0ffbb94f9ffab8b1590d43b8d412c3bb6b6 100644
--- a/webrtc/api/webrtcsession_unittest.cc
+++ b/webrtc/api/webrtcsession_unittest.cc
@@ -1333,7 +1333,8 @@ class WebRtcSessionTest
     const cricket::AudioCodec kCNCodec2(103, "CN", 16000, 0, 1);
 
     // Add kCNCodec for dtmf test.
-    std::vector<cricket::AudioCodec> codecs = media_engine_->audio_codecs();;
+    std::vector<cricket::AudioCodec> codecs =
+        media_engine_->audio_send_codecs();
     codecs.push_back(kCNCodec1);
     codecs.push_back(kCNCodec2);
     media_engine_->SetAudioCodecs(codecs);