Revert "[scheduler] Teach scheduler about audio state"

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 95b5483720539cfee15fd1a1a995415da8f41993..c70c9ba034575a6869eaa6eda952094a25226a50 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1280,7 +1280,8 @@ void WebContentsImpl::SetAudioMuted(bool mute) {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     DidUpdateAudioMutingState(mute));
 
-  OnAudioStateChanged(!mute && audio_stream_monitor_.IsCurrentlyAudible());
+  // Notification for UI updates in response to the changed muting state.
+  NotifyNavigationStateChanged(INVALIDATE_TYPE_TAB);
 }
 
 bool WebContentsImpl::IsConnectedToBluetoothDevice() const {
@@ -1340,14 +1341,6 @@ void WebContentsImpl::NotifyNavigationStateChanged(
     GetOuterWebContents()->NotifyNavigationStateChanged(changed_flags);
 }
 
-void WebContentsImpl::OnAudioStateChanged(bool is_audio_playing) {
-  SendPageMessage(
-      new PageMsg_AudioStateChanged(MSG_ROUTING_NONE, is_audio_playing));
-
-  // Notification for UI updates in response to the changed muting state.
-  NotifyNavigationStateChanged(INVALIDATE_TYPE_TAB);
-}
-
 base::TimeTicks WebContentsImpl::GetLastActiveTime() const {
   return last_active_time_;
 }