Reviewed by Stephanie.

    Reviewed by Stephanie.

        Fix leaks in mac DumpRenderTree.

        * DumpRenderTree/FrameLoadDelegate.mm:
        (-[FrameLoadDelegate init]): Initalize in the correct order.
        (-[FrameLoadDelegate processWork:]): Delete WorkQueueItem's after dequeueing them.
        * DumpRenderTree/LayoutTestController.cpp:
        (decodeHostNameCallback): Put return value in a temporary JSRetainPtr to ensure it gets released.
        (encodeHostNameCallback): ditto.
        * DumpRenderTree/LayoutTestController.h:
        * DumpRenderTree/LayoutTestControllerMac.mm:
        (LayoutTestController::copyDecodedHostName): Rename function to signal that it follows the Create rule.
        (LayoutTestController::copyEncodedHostName): ditto
        (LayoutTestController::queueLoad): Use a JSRetainPtr to ensure the url gets released.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@25529 268f45cc-cd09-0410-ab3c-d52691b4dbfc