Add support for Ash to Notifications

chrome/browser/notifications/balloon_collection_base.h

Index: chrome/browser/notifications/balloon_collection_base.h
diff --git a/chrome/browser/notifications/balloon_collection_base.h b/chrome/browser/notifications/balloon_collection_base.h
index 578c76efb2ec1eec66a5dccc63607510ff65d59d..bc5a2915a48a3f6b37cc97bf77b342a3aeddb22e 100644
--- a/chrome/browser/notifications/balloon_collection_base.h
+++ b/chrome/browser/notifications/balloon_collection_base.h
@@ -48,6 +48,10 @@ class BalloonCollectionBase {
 
   const Balloons& balloons() const { return balloons_; }
 
+  // Returns the balloon matching the given notification id, or
+  // NULL if there is no matching balloon.
+  Balloon* FindBalloonById(const std::string& notification_id);
+
   // Returns the balloon matching the given notification, or
   // NULL if there is no matching balloon.
   Balloon* FindBalloon(const Notification& notification);