Reviewed by Darin

    Reviewed by Darin

        * WebView.subproj/WebHTMLView.m:
        (-[WebHTMLView drawRect:]): Work around for this bug:
        <rdar://problem/3908282> REGRESSION (Mail): No drag image dragging selected text in Blot and Mail
        The reason for the workaround is that this method is called explicitly from the code
        to generate a drag image, and at that time, getRectsBeingDrawn:count: will return a zero count.
        This code change uses the passed-in rect when the count is zero.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8156 268f45cc-cd09-0410-ab3c-d52691b4dbfc