[scheduler] Teach scheduler about audio state

third_party/WebKit/public/platform/scheduler/renderer/renderer_scheduler.h

Index: third_party/WebKit/public/platform/scheduler/renderer/renderer_scheduler.h
diff --git a/third_party/WebKit/public/platform/scheduler/renderer/renderer_scheduler.h b/third_party/WebKit/public/platform/scheduler/renderer/renderer_scheduler.h
index 2a865e880158a249099df7e66d6f0d4474ae05f1..c83786e28913f8e87b4bab461a07173417fbc46b 100644
--- a/third_party/WebKit/public/platform/scheduler/renderer/renderer_scheduler.h
+++ b/third_party/WebKit/public/platform/scheduler/renderer/renderer_scheduler.h
@@ -127,6 +127,14 @@ class BLINK_PLATFORM_EXPORT RendererScheduler : public ChildScheduler {
   // Must be called on the main thread.
   virtual void OnRendererForegrounded() = 0;
 
+  // Tells the scheduler that the renderer process has started playing audio
+  // Must be called on main thread.
+  virtual void OnAudioStarted() = 0;
+
+  // Tells the scheduler that the renderer process has stopped playing audio.
+  // Must be called on main thread.
+  virtual void OnAudioStopped() = 0;
+
   // Tells the scheduler that the render process should be suspended. This can
   // only be done when the renderer is backgrounded. The renderer will be
   // automatically resumed when foregrounded.