[Android] Stop all media on undoable close.

content/browser/media/android/browser_media_player_manager.h

 // Copyright 2013 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_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 52 matching lines @@
   virtual void ExitFullscreen(bool release_media_player);
   virtual void SetVideoSurface(gfx::ScopedJavaSurface surface);
 
   // Called when browser player wants the renderer media element to seek.
   // Any actual seek started by renderer will be handled by browser in OnSeek().
   void OnSeekRequest(int player_id, const base::TimeDelta& time_to_seek);
 
   // Pauses all video players manages by this class.
   void PauseVideo();
 
+  // Stops and releases every media managed by this class.
+  void ReleaseAllMediaPlayers();
+
   // media::MediaPlayerManager overrides.
   virtual void OnTimeUpdate(
       int player_id, base::TimeDelta current_time) OVERRIDE;
   virtual void OnMediaMetadataChanged(
       int player_id,
       base::TimeDelta duration,
       int width,
       int height,
       bool success) OVERRIDE;
   virtual void OnPlaybackComplete(int player_id) OVERRIDE;
@@ skipping 109 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<BrowserMediaPlayerManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMediaPlayerManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_