It adds methods to IWebFrameLoadDelegatePrivate2, a delegate interface that is implemented
by shipping clients of WebKit on Windows.  Adding methods to a delegate interface in this
manner breaks ABI compatibility and leads to crashes or other unexpected behavior when the
methods are used.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@57856 268f45cc-cd09-0410-ab3c-d52691b4dbfc