Change SetOutputScaling to set a single level, not left/right levels.

talk/media/webrtc/fakewebrtcvoiceengine.h

 /*
  * libjingle
  * Copyright 2010 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 182 matching lines @@
     int dtmf_event_code;
     bool dtmf_out_of_band;
     int dtmf_length_ms;
   };
   struct Channel {
     explicit Channel()
         : external_transport(false),
           send(false),
           playout(false),
           volume_scale(1.0),
-          volume_pan_left(1.0),
-          volume_pan_right(1.0),
           vad(false),
           codec_fec(false),
           max_encoding_bandwidth(0),
           opus_dtx(false),
           red(false),
           nack(false),
           rx_agc_enabled(false),
           rx_agc_mode(webrtc::kAgcDefault),
           cn8_type(13),
           cn16_type(105),
           dtmf_type(106),
           red_type(117),
           nack_max_packets(0),
           send_ssrc(0),
           send_audio_level_ext_(-1),
           receive_audio_level_ext_(-1),
           send_absolute_sender_time_ext_(-1),
           receive_absolute_sender_time_ext_(-1),
           associate_send_channel(-1),
           neteq_capacity(-1),
           neteq_fast_accelerate(false) {
       memset(&send_codec, 0, sizeof(send_codec));
       memset(&rx_agc_config, 0, sizeof(rx_agc_config));
     }
     bool external_transport;
     bool send;
     bool playout;
     float volume_scale;
-    float volume_pan_left;
-    float volume_pan_right;
     bool vad;
     bool codec_fec;
     int max_encoding_bandwidth;
     bool opus_dtx;
     bool red;
     bool nack;
     bool rx_agc_enabled;
     webrtc::AgcModes rx_agc_mode;
     webrtc::AgcConfig rx_agc_config;
     int cn8_type;
@@ skipping 678 matching lines @@
   WEBRTC_FUNC(SetChannelOutputVolumeScaling, (int channel, float scale)) {
     WEBRTC_CHECK_CHANNEL(channel);
     channels_[channel]->volume_scale= scale;
     return 0;
   }
   WEBRTC_FUNC(GetChannelOutputVolumeScaling, (int channel, float& scale)) {
     WEBRTC_CHECK_CHANNEL(channel);
     scale = channels_[channel]->volume_scale;
     return 0;
   }
-  WEBRTC_FUNC(SetOutputVolumePan, (int channel, float left, float right)) {
-    WEBRTC_CHECK_CHANNEL(channel);
-    channels_[channel]->volume_pan_left = left;
-    channels_[channel]->volume_pan_right = right;
-    return 0;
-  }
-  WEBRTC_FUNC(GetOutputVolumePan, (int channel, float& left, float& right)) {
-    WEBRTC_CHECK_CHANNEL(channel);
-    left = channels_[channel]->volume_pan_left;
-    right = channels_[channel]->volume_pan_right;
-    return 0;
-  }
+  WEBRTC_STUB(SetOutputVolumePan, (int channel, float left, float right));
+  WEBRTC_STUB(GetOutputVolumePan, (int channel, float& left, float& right));
 
   // webrtc::VoEAudioProcessing
   WEBRTC_FUNC(SetNsStatus, (bool enable, webrtc::NsModes mode)) {
     ns_enabled_ = enable;
     ns_mode_ = mode;
     return 0;
   }
   WEBRTC_FUNC(GetNsStatus, (bool& enabled, webrtc::NsModes& mode)) {
     enabled = ns_enabled_;
     mode = ns_mode_;
@@ skipping 198 matching lines @@
   int playout_sample_rate_;
   DtmfInfo dtmf_info_;
   FakeAudioProcessing audio_processing_;
 };
 
 #undef WEBRTC_CHECK_HEADER_EXTENSION_ID
 
 }  // namespace cricket
 
 #endif  // TALK_SESSION_PHONE_FAKEWEBRTCVOICEENGINE_H_