Remove unused SignalMediaError and infrastructure.

talk/session/media/channel.h

Index: talk/session/media/channel.h
diff --git a/talk/session/media/channel.h b/talk/session/media/channel.h
index 0a7ce9d1a9e8355bc83ac4433a751ef22deb0354..9886454668f9c359da3a35567600cf96b812c4cf 100644
--- a/talk/session/media/channel.h
+++ b/talk/session/media/channel.h
@@ -388,11 +388,6 @@ class VoiceChannel : public BaseChannel {
   int GetOutputLevel_w();
   void GetActiveStreams_w(AudioInfo::StreamList* actives);
 
-  // Signal errors from VoiceMediaChannel.  Arguments are:
-  //     ssrc(uint32), and error(VoiceMediaChannel::Error).
-  sigslot::signal3<VoiceChannel*, uint32, VoiceMediaChannel::Error>
-      SignalMediaError;
-
  private:
   // overrides from BaseChannel
   virtual void OnChannelRead(TransportChannel* channel,
@@ -419,9 +414,6 @@ class VoiceChannel : public BaseChannel {
   virtual void OnMediaMonitorUpdate(
       VoiceMediaChannel* media_channel, const VoiceMediaInfo& info);
   void OnAudioMonitorUpdate(AudioMonitor* monitor, const AudioInfo& info);
-  void OnVoiceChannelError(uint32 ssrc, VoiceMediaChannel::Error error);
-  void SendLastMediaError();
-  void OnSrtpError(uint32 ssrc, SrtpFilter::Mode mode, SrtpFilter::Error error);
 
   static const int kEarlyMediaTimeout = 1000;
   MediaEngineInterface* media_engine_;
@@ -480,8 +472,6 @@ class VideoChannel : public BaseChannel {
 
   bool SendIntraFrame();
   bool RequestIntraFrame();
-  sigslot::signal3<VideoChannel*, uint32, VideoMediaChannel::Error>
-      SignalMediaError;
 
   // Configure sending media on the stream with SSRC |ssrc|
   // If there is only one sending stream SSRC 0 can be used.
@@ -520,9 +510,6 @@ class VideoChannel : public BaseChannel {
   virtual void OnStateChange(VideoCapturer* capturer, CaptureState ev);
   bool GetLocalSsrc(const VideoCapturer* capturer, uint32* ssrc);
 
-  void OnVideoChannelError(uint32 ssrc, VideoMediaChannel::Error error);
-  void OnSrtpError(uint32 ssrc, SrtpFilter::Mode mode, SrtpFilter::Error error);
-
   VideoRenderer* renderer_;
   ScreencastMap screencast_capturers_;
   rtc::scoped_ptr<VideoMediaMonitor> media_monitor_;
@@ -563,8 +550,6 @@ class DataChannel : public BaseChannel {
   sigslot::signal2<DataChannel*, const DataMediaInfo&> SignalMediaMonitor;
   sigslot::signal2<DataChannel*, const std::vector<ConnectionInfo>&>
       SignalConnectionMonitor;
-  sigslot::signal3<DataChannel*, uint32, DataMediaChannel::Error>
-      SignalMediaError;
   sigslot::signal3<DataChannel*,
                    const ReceiveDataParams&,
                    const rtc::Buffer&>
@@ -645,7 +630,6 @@ class DataChannel : public BaseChannel {
       const ReceiveDataParams& params, const char* data, size_t len);
   void OnDataChannelError(uint32 ssrc, DataMediaChannel::Error error);
   void OnDataChannelReadyToSend(bool writable);
-  void OnSrtpError(uint32 ssrc, SrtpFilter::Mode mode, SrtpFilter::Error error);
   void OnStreamClosedRemotely(uint32 sid);
 
   rtc::scoped_ptr<DataMediaMonitor> media_monitor_;