Unreviewed, updated test expectations for GTK and skip tests using
        computedStyleIncludingVisitedInfo which is not currently supported
        in GTK.

        * platform/gtk/Skipped:
        * platform/gtk/fast/forms/isindex-placeholder-expected.txt:
        * platform/gtk/fast/forms/password-placeholder-expected.txt:
        * platform/gtk/fast/forms/password-placeholder-text-security-expected.txt:
        * platform/gtk/fast/forms/placeholder-pseudo-style-expected.txt:
        * platform/gtk/fast/forms/placeholder-set-attribute-expected.txt:
        * platform/gtk/fast/forms/placeholder-stripped-expected.txt:
        * platform/gtk/fast/forms/search-placeholder-value-changed-expected.txt:
        * platform/gtk/fast/forms/search-styled-expected.txt:
        * platform/gtk/fast/forms/textarea-placeholder-pseudo-style-expected.txt:
        * platform/gtk/fast/forms/textarea-placeholder-set-attribute-expected.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@72068 268f45cc-cd09-0410-ab3c-d52691b4dbfc