Adding key press detection in the browser process.

content/renderer/media/webrtc_audio_capturer.cc

Index: content/renderer/media/webrtc_audio_capturer.cc
diff --git a/content/renderer/media/webrtc_audio_capturer.cc b/content/renderer/media/webrtc_audio_capturer.cc
index 238b2a231867208eae02276d9f936c8202316ece..26b0fd769f790b3a5fbd3129823b8019c0a8f561 100644
--- a/content/renderer/media/webrtc_audio_capturer.cc
+++ b/content/renderer/media/webrtc_audio_capturer.cc
@@ -102,14 +102,16 @@ class WebRtcAudioCapturer::TrackOwner
                    int number_of_channels,
                    int number_of_frames,
                    int audio_delay_milliseconds,
-                   int volume) {
+                   int volume,
+                   bool key_pressed) {
     base::AutoLock lock(lock_);
     if (delegate_) {
       delegate_->CaptureData(audio_data,
                              number_of_channels,
                              number_of_frames,
                              audio_delay_milliseconds,
-                             volume);
+                             volume,
+                             key_pressed);
     }
   }
 
@@ -424,10 +426,11 @@ void WebRtcAudioCapturer::SetAutomaticGainControl(bool enable) {
 
 void WebRtcAudioCapturer::Capture(media::AudioBus* audio_source,
                                   int audio_delay_milliseconds,
-                                  double volume) {
-  // This callback is driven by AudioInputDevice::AudioThreadCallback if
-  // |source_| is AudioInputDevice, otherwise it is driven by client's
-  // CaptureCallback.
+                                  double volume,
+                                  bool key_pressed) {
+// This callback is driven by AudioInputDevice::AudioThreadCallback if
+// |source_| is AudioInputDevice, otherwise it is driven by client's
+// CaptureCallback.
 #if defined(OS_WIN) || defined(OS_MACOSX)
   DCHECK_LE(volume, 1.0);
 #elif defined(OS_LINUX) || defined(OS_OPENBSD)
@@ -471,8 +474,11 @@ void WebRtcAudioCapturer::Capture(media::AudioBus* audio_source,
        it != tracks.end();
        ++it) {
     (*it)->CaptureData(buffer_ref_while_calling->buffer(),
-                       audio_source->channels(), audio_source->frames(),
-                       audio_delay_milliseconds, volume_);
+                       audio_source->channels(),
+                       audio_source->frames(),
+                       audio_delay_milliseconds,
+                       volume,
+                       key_pressed);
   }
 }