Remove unused TypingMonitor class.

talk/session/media/typingmonitor.h

Index: talk/session/media/typingmonitor.h
diff --git a/talk/session/media/typingmonitor.h b/talk/session/media/typingmonitor.h
index 4beb8ec0ee3d9472a98e564e69b314cdc48bf399..76446c254b46d86223617d0c8d3ba90e4ccc8591 100644
--- a/talk/session/media/typingmonitor.h
+++ b/talk/session/media/typingmonitor.h
@@ -25,60 +25,4 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef TALK_SESSION_MEDIA_TYPINGMONITOR_H_
-#define TALK_SESSION_MEDIA_TYPINGMONITOR_H_
-
-#include "talk/media/base/mediachannel.h"
-#include "webrtc/base/messagehandler.h"
-
-namespace rtc {
-class Thread;
-}
-
-namespace cricket {
-
-class VoiceChannel;
-class BaseChannel;
-
-struct TypingMonitorOptions {
-  int cost_per_typing;
-  int mute_period;
-  int penalty_decay;
-  int reporting_threshold;
-  int time_window;
-  int type_event_delay;
-  size_t min_participants;
-};
-
-/**
- * An object that observes a channel and listens for typing detection warnings,
- * which can be configured to mute audio capture of that channel for some period
- * of time.  The purpose is to automatically mute someone if they are disturbing
- * a conference with loud keystroke audio signals.
- */
-class TypingMonitor
-    : public rtc::MessageHandler, public sigslot::has_slots<> {
- public:
-  TypingMonitor(VoiceChannel* channel, rtc::Thread* worker_thread,
-                const TypingMonitorOptions& params);
-  ~TypingMonitor();
-
-  sigslot::signal2<BaseChannel*, bool> SignalMuted;
-
-  void OnChannelMuted();
-
- private:
-  void OnVoiceChannelError(uint32 ssrc, VoiceMediaChannel::Error error);
-  void OnMessage(rtc::Message* msg);
-
-  VoiceChannel* channel_;
-  rtc::Thread* worker_thread_;
-  int mute_period_;
-  int muted_at_;
-  bool has_pending_unmute_;
-};
-
-}  // namespace cricket
-
-#endif  // TALK_SESSION_MEDIA_TYPINGMONITOR_H_
-
+ // TODO(solenberg): Remove this file when it's no longer built in Chromium.