BrowserMediaPlayerManager: Call OnKeyAdded() on the correct player.

content/browser/media/android/browser_media_player_manager.h

Index: content/browser/media/android/browser_media_player_manager.h
diff --git a/content/browser/media/android/browser_media_player_manager.h b/content/browser/media/android/browser_media_player_manager.h
index 591a44529683d908af736eb5ac355b63a01237c9..308ed02f5b0598322e926eacdef366dda9501556 100644
--- a/content/browser/media/android/browser_media_player_manager.h
+++ b/content/browser/media/android/browser_media_player_manager.h
@@ -5,6 +5,7 @@
 #ifndef CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 
+#include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ -218,6 +219,11 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
   // An array of managed media DRM bridges.
   ScopedVector<media::MediaDrmBridge> drm_bridges_;
 
+  // Map from DrmBridge cdm_id to MediaPlayerAndroid player_id to indicate that
+  // the DrmBridge is set on the MediaPlayerAndroid object.
+  typedef std::map<int, int> DrmBridgePlayerMap;
+  DrmBridgePlayerMap drm_bridge_player_map_;
+
   // The fullscreen video view object or NULL if video is not played in
   // fullscreen.
   scoped_ptr<ContentVideoView> video_view_;