- fix Frame leak on layout tests

        * WebCoreSupport/WebPageBridge.m:
        (-[WebPageBridge outerView]): Return WebFrameView for main frame instead
        of WebView to avoid reference cycle between WebView and Page.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15089 268f45cc-cd09-0410-ab3c-d52691b4dbfc