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One of the goals of the asynchronous temporary storage initialization is to call Ensure(Persistent|Temporary)OriginIsInitialized only from Initialize(Persistent|Temporary)OriginOp. Calling from other places including quota clients will be disallowed by changing the method to a private method. The private nature of the method should be emphasized by adding the Internal suffix. Differential Revision: https://phabricator.services.mozilla.com/D192150