This test appears to be occasionally hanging.  Disabling it while
        I figure out why.

        * editing/selection/drag-to-contenteditable-iframe.html: Removed.
        * editing/selection/drag-to-contenteditable-iframe.html-disabled: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@12879 268f45cc-cd09-0410-ab3c-d52691b4dbfc