Adding key press detection in the browser process.

content/renderer/media/webrtc_local_audio_track.cc

Index: content/renderer/media/webrtc_local_audio_track.cc
diff --git a/content/renderer/media/webrtc_local_audio_track.cc b/content/renderer/media/webrtc_local_audio_track.cc
index de86a3c4cc36e5d381a4c419cb6dd76409d9bcd2..cae6bfe8ba38bcd85a32f75cf6c6faaa6d1514e5 100644
--- a/content/renderer/media/webrtc_local_audio_track.cc
+++ b/content/renderer/media/webrtc_local_audio_track.cc
@@ -47,7 +47,8 @@ void WebRtcLocalAudioTrack::CaptureData(const int16* audio_data,
                                         int number_of_channels,
                                         int number_of_frames,
                                         int audio_delay_milliseconds,
-                                        int volume) {
+                                        int volume,
+                                        bool key_pressed) {
   scoped_refptr<WebRtcAudioCapturer> capturer;
   std::vector<int> voe_channels;
   int sample_rate = 0;
@@ -68,10 +69,15 @@ void WebRtcLocalAudioTrack::CaptureData(const int16* audio_data,
 
   // Feed the data to the sinks.
   for (SinkList::const_iterator it = sinks.begin(); it != sinks.end(); ++it) {
-    int new_volume = (*it)->CaptureData(voe_channels, audio_data, sample_rate,
-                                        number_of_channels, number_of_frames,
-                                        audio_delay_milliseconds, volume,
-                                        need_audio_processing_);
+    int new_volume = (*it)->CaptureData(voe_channels,
+                                        audio_data,
+                                        sample_rate,
+                                        number_of_channels,
+                                        number_of_frames,
+                                        audio_delay_milliseconds,
+                                        volume,
+                                        need_audio_processing_,
+                                        key_pressed);
     if (new_volume != 0 && capturer.get())
       capturer->SetVolume(new_volume);
   }