Reviewed by Darin Adler.

        Prevent event dispatch for events with related target when host is the target.
        https://bugs.webkit.org/show_bug.cgi?id=61979

        * fast/events/shadow-boundary-crossing-expected.txt: Added test.
        * fast/events/shadow-boundary-crossing.html: Added expectations.
2011-06-02  Dimitri Glazkov  <dglazkov@chromium.org>

        Reviewed by Darin Adler.

        Prevent event dispatch for events with related target when host is the target.
        https://bugs.webkit.org/show_bug.cgi?id=61979

        Turns out, even if we trim the ancestor chain to 0, the event is still dispatched during AT_TARGET.
        So might as well be explicit about what we are trying to do and add a flag to prevent dispatch in these cases.

        * dom/EventDispatcher.cpp:
        (WebCore::EventDispatcher::adjustToShadowBoundaries): Added preventing dispatch when the ancestor chain is trimmed to nothing.
        (WebCore::EventDispatcher::EventDispatcher): Added initializer.
        (WebCore::EventDispatcher::dispatchEvent): Added a check to prevent dispatch.
        * dom/EventDispatcher.h: Added a def.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@88026 268f45cc-cd09-0410-ab3c-d52691b4dbfc