Remove unused TypingMonitor class.

talk/session/media/channel.cc

Index: talk/session/media/channel.cc
diff --git a/talk/session/media/channel.cc b/talk/session/media/channel.cc
index f65579f98b221b2caac5e0feea8a0d3a395bc0f0..428829192ffb02679ab114a8020caa0ec1eeedc1 100644
--- a/talk/session/media/channel.cc
+++ b/talk/session/media/channel.cc
@@ -31,7 +31,6 @@
 #include "talk/media/base/rtputils.h"
 #include "webrtc/p2p/base/transportchannel.h"
 #include "talk/session/media/channelmanager.h"
-#include "talk/session/media/typingmonitor.h"
 #include "webrtc/base/bind.h"
 #include "webrtc/base/buffer.h"
 #include "webrtc/base/byteorder.h"
@@ -1384,26 +1383,6 @@ bool VoiceChannel::IsAudioMonitorRunning() const {
   return (audio_monitor_.get() != NULL);
 }
 
-void VoiceChannel::StartTypingMonitor(const TypingMonitorOptions& settings) {
-  typing_monitor_.reset(new TypingMonitor(this, worker_thread(), settings));
-  SignalAutoMuted.repeat(typing_monitor_->SignalMuted);
-}
-
-void VoiceChannel::StopTypingMonitor() {
-  typing_monitor_.reset();
-}
-
-bool VoiceChannel::IsTypingMonitorRunning() const {
-  return typing_monitor_;
-}
-
-bool VoiceChannel::MuteStream_w(uint32 ssrc, bool mute) {
-  bool ret = BaseChannel::MuteStream_w(ssrc, mute);
-  if (typing_monitor_ && mute)
-    typing_monitor_->OnChannelMuted();
-  return ret;
-}
-
 int VoiceChannel::GetInputLevel_w() {
   return media_engine_->GetInputLevel();
 }