Adding key press detection in the browser process.

content/renderer/media/webrtc_local_audio_track.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/media/webrtc_local_audio_track.h"
 
 #include "content/renderer/media/webrtc_audio_capturer.h"
 #include "content/renderer/media/webrtc_audio_capturer_sink_owner.h"
 #include "third_party/libjingle/source/talk/media/base/audiorenderer.h"
 
@@ skipping 30 matching lines @@
   // Users might not call Stop() on the track.
   if (capturer_.get())
     Stop();
 }
 
 // Content::WebRtcAudioCapturerSink implementation.
 void WebRtcLocalAudioTrack::CaptureData(const int16* audio_data,
                                         int number_of_channels,
                                         int number_of_frames,
                                         int audio_delay_milliseconds,
-                                        double volume) {
+                                        double volume,
+                                        bool key_pressed) {
   SinkList sinks;
   {
     base::AutoLock auto_lock(lock_);
     // When the track is diabled, we simply return here.
     // TODO(xians): Figure out if we should feed zero to sinks instead, in
     // order to inject VAD data in such case.
     if (!enabled())
       return;
 
     sinks = sinks_;
   }
 
   // Feed the data to the sinks.
   for (SinkList::const_iterator it = sinks.begin();
        it != sinks.end();
        ++it) {
-    (*it)->CaptureData(audio_data, number_of_channels, number_of_frames,
-                       audio_delay_milliseconds, volume);
+    (*it)->CaptureData(audio_data,
+                       number_of_channels,
+                       number_of_frames,
+                       audio_delay_milliseconds,
+                       volume,
+                       key_pressed);
   }
 }
 
 void WebRtcLocalAudioTrack::SetCaptureFormat(
     const media::AudioParameters& params) {
   base::AutoLock auto_lock(lock_);
   params_ = params;
 
   // Update all the existing sinks with the new format.
   for (SinkList::const_iterator it = sinks_.begin();
@@ skipping 57 matching lines @@
 void WebRtcLocalAudioTrack::Stop() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "WebRtcLocalAudioTrack::Stop()";
   if (capturer_.get()) {
     capturer_->RemoveSink(this);
     capturer_ = NULL;
   }
 }
 
 }  // namespace content