[scheduler] Teach scheduler about audio state

content/public/browser/render_process_host.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 86 matching lines @@
   // content module.
   virtual void ShutdownForBadMessage() = 0;
 
   // Track the count of visible widgets. Called by listeners to register and
   // unregister visibility.
   virtual void WidgetRestored() = 0;
   virtual void WidgetHidden() = 0;
   virtual int VisibleWidgetCount() const = 0;
 
   // Called when the audio state changes for this render process host.
-  virtual void AudioStateChanged() = 0;
+  virtual void AudioStateChanged(bool is_audio_playing) = 0;
 
   // Indicates whether the current RenderProcessHost is exclusively hosting
   // guest RenderFrames. Not all guest RenderFrames are created equal.  A guest,
   // as indicated by BrowserPluginGuest::IsGuest, may coexist with other
   // non-guest RenderFrames in the same process if IsForGuestsOnly() is false.
   virtual bool IsForGuestsOnly() const = 0;
 
   // Returns the storage partition associated with this process.
   virtual StoragePartition* GetStoragePartition() const = 0;
 
@@ skipping 254 matching lines @@
   static void SetMaxRendererProcessCount(size_t count);
 
   // Returns the current maximum number of renderer process hosts kept by the
   // content module.
   static size_t GetMaxRendererProcessCount();
 };
 
 }  // namespace content.
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_