Mail (running on tip of tree WebKit) was running into an assertion I recently added.
        The assertion is actually correct, catching an old bug in this code.

        * WebView.subproj/WebView.m:
        (-[WebView selectedFrame]):
        if the first responder is a WebFrameView, then we've found the WebFrameView we're
        looking for, and we shouldn't look at its superviews.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@9873 268f45cc-cd09-0410-ab3c-d52691b4dbfc