Adding key press detection in the browser process.

content/renderer/media/webrtc_audio_device_impl.h

Index: content/renderer/media/webrtc_audio_device_impl.h
diff --git a/content/renderer/media/webrtc_audio_device_impl.h b/content/renderer/media/webrtc_audio_device_impl.h
index 960d0d0d985dc45e4622f9d6fb3f08b2f46eeec4..68ba84ab2998a4e871d0760e0b26e3b0f1bbb7ac 100644
--- a/content/renderer/media/webrtc_audio_device_impl.h
+++ b/content/renderer/media/webrtc_audio_device_impl.h
@@ -208,7 +208,8 @@ class WebRtcAudioCapturerSink {
                            int number_of_channels,
                            int number_of_frames,
                            int audio_delay_milliseconds,
-                           double volume) = 0;
+                           double volume,
+                           bool key_pressed) = 0;
 
   // Set the format for the capture audio parameters.
   virtual void SetCaptureFormat(const media::AudioParameters& params) = 0;
@@ -319,7 +320,8 @@ class CONTENT_EXPORT WebRtcAudioDeviceImpl
                            int number_of_channels,
                            int number_of_frames,
                            int audio_delay_milliseconds,
-                           double volume) OVERRIDE;
+                           double volume,
+                           bool key_pressed) OVERRIDE;
 
   // Called on the main render thread.
   virtual void SetCaptureFormat(const media::AudioParameters& params) OVERRIDE;