2011-01-17 Maciej Stachowiak <mjs@apple.com>

2011-01-17  Maciej Stachowiak  <mjs@apple.com>

        Reviewed by Dan Bernstein.

        Some WebKit2 layout tests crash due to focus being on a frame in the page cache
        https://bugs.webkit.org/show_bug.cgi?id=52607

        No new tests. Existing tests crash in WebKit2 without this fix.

        I suspect there are other consequences besides the WebKit2 crash, but I
        was unable to identify any for certain.

        * history/CachedFrame.cpp:
        (WebCore::CachedFrame::CachedFrame): If a frame still has focus when its page
        goes in the page cache, reset focus to the main frame.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@75994 268f45cc-cd09-0410-ab3c-d52691b4dbfc