Reviewed by Adam Barth.

        r71925 broke the chrome new tab page. r71925 blocked drag and drop
        of same security origin objects onto themselves if their origin is
        marked unique. We need to allow drag and drop in that scenario.
        https://bugs.webkit.org/show_bug.cgi?id=49098

        Test: http/tests/security/drag-drop-same-unique-origin.html

        * page/SecurityOrigin.cpp:
        (WebCore::SecurityOrigin::canReceiveDragData):
2010-11-23  Abhishek Arya  <inferno@chromium.org>

        Reviewed by Adam Barth.

        Tests that drag and drop is allowed across the same security origin object,
        even if they are marked unique.

        * http/tests/security/drag-drop-same-unique-origin-expected.txt: Added.
        * http/tests/security/drag-drop-same-unique-origin.html: Added.
        * http/tests/security/resources/drag-drop-allowed.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@72644 268f45cc-cd09-0410-ab3c-d52691b4dbfc