Add a function to convert key system into UUID

content/browser/android/media_player_manager_impl.h

Index: content/browser/android/media_player_manager_impl.h
diff --git a/content/browser/android/media_player_manager_impl.h b/content/browser/android/media_player_manager_impl.h
index 48f058ffff7ff4d11fcc942dedb2a3103a696291..391849310627723d3508a7d18a8caedae17b4df6 100644
--- a/content/browser/android/media_player_manager_impl.h
+++ b/content/browser/android/media_player_manager_impl.h
@@ -144,8 +144,11 @@ class CONTENT_EXPORT MediaPlayerManagerImpl
   // Removes the player with the specified id.
   void RemovePlayer(int player_id);
 
+  // Add a new DrmBridge for the given key system and id.
+  void AddDrmBridge(int media_keys_id, const std::string& key_system);
+
   // Removes the DRM bridge with the specified id.
-  void RemoveDrmBridge(int key_id);
+  void RemoveDrmBridge(int media_keys_id);
 
  private:
   // An array of managed players.