Remove unused methods in WebRtcVoiceEngine and VoiceMediaChannel.

webrtc/media/base/mediachannel.h

Index: webrtc/media/base/mediachannel.h
diff --git a/webrtc/media/base/mediachannel.h b/webrtc/media/base/mediachannel.h
index 6e4011145b2857406dba89f79750e1f906669b0f..ca02c72fcdeee3092dc37c4529b51b37fa77a4d9 100644
--- a/webrtc/media/base/mediachannel.h
+++ b/webrtc/media/base/mediachannel.h
@@ -991,12 +991,6 @@ class VoiceMediaChannel : public MediaChannel {
   virtual bool GetActiveStreams(AudioInfo::StreamList* actives) = 0;
   // Get the current energy level of the stream sent to the speaker.
   virtual int GetOutputLevel() = 0;
-  // Get the time in milliseconds since last recorded keystroke, or negative.
-  virtual int GetTimeSinceLastTyping() = 0;
-  // Temporarily exposed field for tuning typing detect options.
-  virtual void SetTypingDetectionParameters(int time_window,
-    int cost_per_typing, int reporting_threshold, int penalty_decay,
-    int type_event_delay) = 0;
   // Set speaker output volume of the specified ssrc.
   virtual bool SetOutputVolume(uint32_t ssrc, double volume) = 0;
   // Returns if the telephone-event has been negotiated.