Reviewed by Maciej.

    Reviewed by Maciej.

        - Removed context and exception parameters from JSObjectGetPropertyEnumerator,
        removing the spurious use of ExecState inside JavaScriptCore that made
        us think this was necessary in the first place.

        (StringInstance::getPropertyList): Use getString instead of toString because
        we know we're dealing with a string -- we put it there in the first place.
        While we're at it, store the string's size instead of retrieving it each time
        through the loop, to avoid the unnecessary killing of puppies.
        * kjs/string_object.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@15385 268f45cc-cd09-0410-ab3c-d52691b4dbfc