Revert 217768 "Adding key press detection in the browser process."

trunk/src/content/browser/renderer_host/media/audio_input_renderer_host.h

Index: trunk/src/content/browser/renderer_host/media/audio_input_renderer_host.h
===================================================================
--- trunk/src/content/browser/renderer_host/media/audio_input_renderer_host.h	(revision 217773)
+++ trunk/src/content/browser/renderer_host/media/audio_input_renderer_host.h	(working copy)
@@ -44,7 +44,6 @@
 namespace media {
 class AudioManager;
 class AudioParameters;
-class UserInputMonitor;
 }
 
 namespace content {
@@ -56,11 +55,10 @@
       public media::AudioInputController::EventHandler {
  public:
   // Called from UI thread from the owner of this object.
-  // |user_input_monitor| is used for typing detection and can be NULL.
-  AudioInputRendererHost(media::AudioManager* audio_manager,
-                         MediaStreamManager* media_stream_manager,
-                         AudioMirroringManager* audio_mirroring_manager,
-                         media::UserInputMonitor* user_input_monitor);
+  AudioInputRendererHost(
+      media::AudioManager* audio_manager,
+      MediaStreamManager* media_stream_manager,
+      AudioMirroringManager* audio_mirroring_manager);
 
   // BrowserMessageFilter implementation.
   virtual void OnChannelClosing() OVERRIDE;
@@ -156,9 +154,6 @@
   // A map of stream IDs to audio sources.
   AudioEntryMap audio_entries_;
 
-  // Raw pointer of the UserInputMonitor.
-  media::UserInputMonitor* user_input_monitor_;
-
   DISALLOW_COPY_AND_ASSIGN(AudioInputRendererHost);
 };