Revert of [scheduler] Teach scheduler about audio state

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 14a3e97ea2d7698f053d971bfdde86b86d814da8..8650d613aa91cf1a7c004d7988d7fec06245c642 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1363,7 +1363,6 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(PageMsg_WasShown, OnPageWasShown)
     IPC_MESSAGE_HANDLER(PageMsg_SetHistoryOffsetAndLength,
                         OnSetHistoryOffsetAndLength)
-    IPC_MESSAGE_HANDLER(PageMsg_AudioStateChanged, OnAudioStateChanged)
 
 #if defined(OS_ANDROID)
     IPC_MESSAGE_HANDLER(ViewMsg_UpdateBrowserControlsState,
@@ -1455,10 +1454,6 @@ void RenderViewImpl::OnUpdateWindowScreenRect(gfx::Rect window_screen_rect) {
   RenderWidget::OnUpdateWindowScreenRect(window_screen_rect);
 }
 
-void RenderViewImpl::OnAudioStateChanged(bool is_audio_playing) {
-  webview()->audioStateChanged(is_audio_playing);
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 void RenderViewImpl::SendUpdateState() {