| Index: content/browser/web_contents/web_contents_impl.h | 
| diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h | 
| index a247d037d06911887c5b7c116592fc189b27f030..c36e7f2ae12b8517ff8f00245d1d7ee10115a193 100644 | 
| --- a/content/browser/web_contents/web_contents_impl.h | 
| +++ b/content/browser/web_contents/web_contents_impl.h | 
| @@ -85,6 +85,7 @@ struct ResourceRequestDetails; | 
|  | 
| #if defined(OS_ANDROID) && !defined(USE_AURA) | 
| class WebContentsAndroid; | 
| +class MediaSession; | 
| #endif | 
|  | 
| // Factory function for the implementations that content knows about. Takes | 
| @@ -380,7 +381,7 @@ class CONTENT_EXPORT WebContentsImpl | 
| void ExitFullscreen() override; | 
| void ResumeLoadingCreatedWebContents() override; | 
| #if defined(OS_ANDROID) | 
| -  void OnMediaSessionStateChanged(); | 
| +  void OnMediaSessionStateChanged(MediaSession* session); | 
| void ResumeMediaSession() override; | 
| void SuspendMediaSession() override; | 
| void StopMediaSession() override; | 
|  |