Reviewed by Tony Gentilcore.

        Add beforeload to icon and prefetch link rel types
        https://bugs.webkit.org/show_bug.cgi?id=56424

        Unfortunately, there's lots of skipped tests, and a chrome failure
        expectation here, in a strange disjoint set.  On the chromium
        port, favicon loads don't occur in DRT, so the favicon changes are
        expected to fail.  On the ports without prefetching, we expect the
        prefetching test to fail.

        * fast/dom/HTMLLinkElement/prefetch-beforeload-expected.txt: Added.
        * fast/dom/HTMLLinkElement/prefetch-beforeload.html: Added.
        * http/tests/misc/link-rel-icon-beforeload-expected.txt: Added.
        * http/tests/misc/link-rel-icon-beforeload.html: Added.
        * platform/chromium/test_expectations.txt:
        * platform/gtk/Skipped:
        * platform/mac/Skipped:
        * platform/qt/Skipped:
        * platform/win/Skipped:
        * webarchive/test-link-rel-icon-beforeload-expected.webarchive: Added.
        * webarchive/test-link-rel-icon-beforeload.html: Added.
2011-03-29  Gavin Peters  <gavinp@chromium.org>

        Reviewed by Tony Gentilcore.

        Add beforeload to icon and prefetch link rel types
        https://bugs.webkit.org/show_bug.cgi?id=56424

        Over in https://lists.webkit.org/pipermail/webkit-dev/2011-February/016034.html , a webkit-dev
        thread, I've discussed my hopes for the link element, and adding the link header.  This
        change helps improve the link header by making it participate in the beforeload event in
        two more important cases.

        Tests: fast/dom/HTMLLinkElement/prefetch-beforeload.html
               http/tests/misc/link-rel-icon-beforeload.html
               webarchive/test-link-rel-icon-beforeload.html

        * html/HTMLLinkElement.cpp:
        (WebCore::HTMLLinkElement::checkBeforeLoadEvent):
        (WebCore::HTMLLinkElement::process):
        * html/HTMLLinkElement.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@82342 268f45cc-cd09-0410-ab3c-d52691b4dbfc