Replace AudioSilenceDetector with an AudioPowerMonitor.

chrome/browser/media/media_capture_devices_dispatcher.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 "chrome/browser/media/media_capture_devices_dispatcher.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "base/sha1.h"
@@ skipping 462 matching lines @@
       BrowserThread::UI, FROM_HERE,
       base::Bind(
           &MediaCaptureDevicesDispatcher::UpdateMediaRequestStateOnUIThread,
           base::Unretained(this), render_process_id, render_view_id,
           page_request_id, device, state));
 
 }
 
 void MediaCaptureDevicesDispatcher::OnAudioStreamPlayingChanged(
     int render_process_id, int render_view_id, int stream_id,
-    bool is_playing_and_audible) {
-  audio_stream_indicator_->UpdateWebContentsStatus(render_process_id,
-                                                   render_view_id,
-                                                   stream_id,
-                                                   is_playing_and_audible);
+    bool is_playing, float power_dbfs, bool clipped) {
+  audio_stream_indicator_->UpdateWebContentsStatus(
+      render_process_id, render_view_id, stream_id,
+      is_playing, power_dbfs, clipped);
 }
 
 void MediaCaptureDevicesDispatcher::OnCreatingAudioStream(
     int render_process_id,
     int render_view_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(
           &MediaCaptureDevicesDispatcher::OnCreatingAudioStreamOnUIThread,
@@ skipping 52 matching lines @@
                                     state));
 }
 
 void MediaCaptureDevicesDispatcher::OnCreatingAudioStreamOnUIThread(
     int render_process_id,
     int render_view_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   FOR_EACH_OBSERVER(Observer, observers_,
                     OnCreatingAudioStream(render_process_id, render_view_id));
 }