Adding key press detection in the browser process.

content/renderer/media/webrtc_local_audio_track.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_WEBRTC_LOCAL_AUDIO_TRACK_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_LOCAL_AUDIO_TRACK_H_
 
 #include <list>
 #include <string>
 
@@ skipping 43 matching lines @@
 
   // Stops the local audio track. Called on the main render thread and
   // should be called only once when audio track going away.
   void Stop();
 
   // Method called by the capturer to deliever the capture data.
   void CaptureData(const int16* audio_data,
                    int number_of_channels,
                    int number_of_frames,
                    int audio_delay_milliseconds,
-                   int volume);
+                   int volume,
+                   bool key_pressed);
 
   // Method called by the capturer to set the audio parameters used by source
   // of the capture data..
   // Can be called on different user threads.
   void SetCaptureFormat(const media::AudioParameters& params);
 
  protected:
   WebRtcLocalAudioTrack(const std::string& label,
                         const scoped_refptr<WebRtcAudioCapturer>& capturer,
                         webrtc::AudioSourceInterface* track_source);
@@ skipping 37 matching lines @@
   std::vector<int> voe_channels_;
 
   bool need_audio_processing_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcLocalAudioTrack);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_LOCAL_AUDIO_TRACK_H_