[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 c31ba7c346ac09949f33c29a95c8fd22ce7ba8a4..ffc0ed92e1eb8040d2afd96a3d4cb921aa7f4138 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -1351,6 +1351,7 @@ bool RenderViewImpl::OnMessageReceived(const IPC::Message& message) {
                         OnReleaseDisambiguationPopupBitmap)
     IPC_MESSAGE_HANDLER(ViewMsg_ForceRedraw, OnForceRedraw)
     IPC_MESSAGE_HANDLER(ViewMsg_SelectWordAroundCaret, OnSelectWordAroundCaret)
+    IPC_MESSAGE_HANDLER(ViewMsg_AudioStateChanged, OnAudioStateChanged)
 
     // Page messages.
     IPC_MESSAGE_HANDLER(PageMsg_UpdateWindowScreenRect,
@@ -1452,6 +1453,10 @@ 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() {