Fix leak in JsSyncManagerObserver

sync/internal_api/js_sync_manager_observer.cc

Index: sync/internal_api/js_sync_manager_observer.cc
diff --git a/sync/internal_api/js_sync_manager_observer.cc b/sync/internal_api/js_sync_manager_observer.cc
index 078e1e9a51d32d72dc496ba44cea6f36a4f4b4b0..f0171078ff2836ea0552433f9c9e1a3543fed63d 100644
--- a/sync/internal_api/js_sync_manager_observer.cc
+++ b/sync/internal_api/js_sync_manager_observer.cc
@@ -131,10 +131,12 @@ void JsSyncManagerObserver::OnInitializationComplete(
   // Ignore the |js_backend| argument; it's not really convertible to
   // JSON anyway.
 
-  DictionaryValue* details = new DictionaryValue();
-  details->Set("restoredTypes", ModelTypeSetToValue(restored_types));
+  DictionaryValue details;
+  details.Set("restoredTypes", ModelTypeSetToValue(restored_types));
 
-  HandleJsEvent(FROM_HERE, "onInitializationComplete", JsEventDetails(details));
+  HandleJsEvent(FROM_HERE,
+                "onInitializationComplete",
+                JsEventDetails(&details));
 }
 
 void JsSyncManagerObserver::OnStopSyncingPermanently() {