Make IDL Callbacks non-refcounted by default

Source/modules/quota/StorageQuota.h

Index: Source/modules/quota/StorageQuota.h
diff --git a/Source/modules/quota/StorageQuota.h b/Source/modules/quota/StorageQuota.h
index 0e4775f05c11f82c8dcbe417a7b960e6ebc63560..285d51511da1f579beb92258b43bbd197d2b02f6 100644
--- a/Source/modules/quota/StorageQuota.h
+++ b/Source/modules/quota/StorageQuota.h
@@ -54,9 +54,9 @@ public:
         return adoptRef(new StorageQuota(type));
     }
 
-    void queryUsageAndQuota(ExecutionContext*, PassRefPtr<StorageUsageCallback>, PassRefPtr<StorageErrorCallback>);
+    void queryUsageAndQuota(ExecutionContext*, PassOwnPtr<StorageUsageCallback>, PassOwnPtr<StorageErrorCallback>);
 
-    void requestQuota(ExecutionContext*, unsigned long long newQuotaInBytes, PassRefPtr<StorageQuotaCallback>, PassRefPtr<StorageErrorCallback>);
+    void requestQuota(ExecutionContext*, unsigned long long newQuotaInBytes, PassOwnPtr<StorageQuotaCallback>, PassOwnPtr<StorageErrorCallback>);
 
     ~StorageQuota();