Keep playing audio even when opening another tab, going to another app etc.

webkit/media/android/webmediaplayer_manager_android.h

Index: webkit/media/android/webmediaplayer_manager_android.h
diff --git a/webkit/media/android/webmediaplayer_manager_android.h b/webkit/media/android/webmediaplayer_manager_android.h
index 1e959a0fc25dd348b8858c97ee37c1047f5aff24..d342c31a9c4cb2be9cd7abe40285c832c567f27e 100644
--- a/webkit/media/android/webmediaplayer_manager_android.h
+++ b/webkit/media/android/webmediaplayer_manager_android.h
@@ -28,8 +28,9 @@ class WebMediaPlayerManagerAndroid {
   int RegisterMediaPlayer(WebMediaPlayerAndroid* player);
   void UnregisterMediaPlayer(int player_id);
 
-  // Release all the media resources managed by this object.
-  void ReleaseMediaResources();
+  // Release all the media resources managed by this object unless
+  // a media play is in progress.
+  void ReleaseMediaResourcesIfNotPlaying();
 
   // Check whether a player can enter fullscreen.
   bool CanEnterFullscreen(WebKit::WebFrame* frame);