Replace AudioConferenceMixer with AudioMixer.

webrtc/audio/audio_receive_stream_unittest.cc

Index: webrtc/audio/audio_receive_stream_unittest.cc
diff --git a/webrtc/audio/audio_receive_stream_unittest.cc b/webrtc/audio/audio_receive_stream_unittest.cc
index d30eb110cec5d250e52989d223070d19e3731e25..94bfabd74bb7b9dbf20c8e4b099b3112a1dc4732 100644
--- a/webrtc/audio/audio_receive_stream_unittest.cc
+++ b/webrtc/audio/audio_receive_stream_unittest.cc
@@ -119,7 +119,6 @@ struct ConfigHelper {
               .After(expect_set);
           return channel_proxy_;
         }));
-    EXPECT_CALL(voice_engine_, StopPlayout(kChannelId)).WillOnce(Return(0));

[ossu, 2016/10/25 14:13:33]

Why won't StopPlayout be called after this change?

[the sun, 2016/10/27 10:06:45]

Because it is called from the dtor, but now the call will only happen if the
stream has actually been started.

[aleloi, 2016/11/01 15:17:35]

Thanks, sorry for being late!

     stream_config_.voe_channel_id = kChannelId;
     stream_config_.rtp.local_ssrc = kLocalSsrc;
     stream_config_.rtp.remote_ssrc = kRemoteSsrc;