Adding the logic for releasing decoder resources in WebMediaPlayerManagerAndroid

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 e8a046a664d561412fc9ae3955adbf277e14e859..d6b133c147e246d08af0b29fdf7271984078ab34 100644
--- a/webkit/media/android/webmediaplayer_manager_android.h
+++ b/webkit/media/android/webmediaplayer_manager_android.h
@@ -26,6 +26,13 @@ class WebMediaPlayerManagerAndroid {
   int RegisterMediaPlayer(WebMediaPlayerAndroid* player);
   void UnregisterMediaPlayer(int player_id);
 
+  // Called when a mediaplayer starts to decode media. If the number
+  // of active decoders hits the limit, release some resources.
+  // TODO(qinmin): we need to classify between video and audio decoders.
+  // Audio decoders are inexpensive. And css animations often come with
+  // lots of small audio files.
+  void RequestMediaResources(int player_id);
+
   // Release all the media resources on the renderer process.
   void ReleaseMediaResources();
 
@@ -34,8 +41,8 @@ class WebMediaPlayerManagerAndroid {
 
  private:
   // Information needed to manage WebMediaPlayerAndroid.
-  // TODO(qinmin): more informations will be added here for resource management.
   struct MediaPlayerInfo {
+    bool is_active_;
     webkit_media::WebMediaPlayerAndroid* player;
   };
 
@@ -45,6 +52,9 @@ class WebMediaPlayerManagerAndroid {
 
   int32 next_media_player_id_;
 
+  // Number of active players.
+  int32 num_active_players_;
+
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerManagerAndroid);
 };