[scheduler] Teach scheduler about audio state

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 18801c0766f9457c375b7b23866efa4305ea822d..94e1d55458aaf9961bcfc89947d040d71acdd75d 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1553,6 +1553,7 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_SuppressFurtherDialogs,
                         OnSuppressFurtherDialogs)
     IPC_MESSAGE_HANDLER(FrameMsg_RunFileChooserResponse, OnFileChooserResponse)
+    IPC_MESSAGE_HANDLER(FrameMsg_AudioStateChanged, OnAudioStateChanged)
 #if defined(OS_ANDROID)
     IPC_MESSAGE_HANDLER(FrameMsg_ActivateNearestFindResult,
                         OnActivateNearestFindResult)
@@ -5351,6 +5352,10 @@ void RenderFrameImpl::OnFileChooserResponse(
   }
 }
 
+void RenderFrameImpl::OnAudioStateChanged(bool is_audio_playing) {
+  frame_->audioStateChanged(is_audio_playing);
+}
+
 #if defined(OS_ANDROID)
 void RenderFrameImpl::OnActivateNearestFindResult(int request_id,
                                                   float x,