Reviewed by Darin Adler.

        CorrectionPanel sometimes hangs in dismissSoon().
        https://bugs.webkit.org/show_bug.cgi?id=60599
        <rdar://problem/9313628>

        Make sure dismissSoon() won't wait indefinitely if handleAcceptedReplacement() sets m_resultForSynchronousDismissal
        to nil. Added a designated variable m_isDismissing, instead of piggy-backing m_resultForSynchronousDismissal,
        for condition checking.

        * WebCoreSupport/CorrectionPanel.h:
        * WebCoreSupport/CorrectionPanel.mm:
        (CorrectionPanel::CorrectionPanel):
        (CorrectionPanel::show):
        (CorrectionPanel::dismissSoon):
        (CorrectionPanel::dismissInternal):
        (CorrectionPanel::handleAcceptedReplacement):
2011-05-11  Jia Pu  <jpu@apple.com>

        Reviewed by Darin Adler.

        CorrectionPanel sometimes hangs in dismissSoon().
        https://bugs.webkit.org/show_bug.cgi?id=60599
        <rdar://problem/9313628>

        Make sure dismissSoon() won't wait indefinitely if handleAcceptedReplacement() sets m_resultForSynchronousDismissal
        to nil. Added a designated variable m_isDismissing, instead of piggy-backing m_resultForSynchronousDismissal,
        for condition checking.

        * UIProcess/mac/CorrectionPanel.h:
        * UIProcess/mac/CorrectionPanel.mm:
        (WebKit::CorrectionPanel::CorrectionPanel):
        (WebKit::CorrectionPanel::show):
        (WebKit::CorrectionPanel::dismissSoon):
        (WebKit::CorrectionPanel::dismissInternal):
        (WebKit::CorrectionPanel::handleAcceptedReplacement):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@86281 268f45cc-cd09-0410-ab3c-d52691b4dbfc