Reviewed by Chris Fleizach.

        [GTK] Unskip accessibility/input-slider.html and accessibility/media-element.html
        https://bugs.webkit.org/show_bug.cgi?id=58040

        Unskip passing tests and update expectations.

        * platform/gtk/Skipped: Unskip passing tests.
        * platform/gtk/accessibility/input-slider-expected.txt: Added.
        * platform/gtk/accessibility/input-slider.html: Copied from
        accessibility/input-slider.html and adjusted accordingly.
        * platform/gtk/accessibility/media-element-expected.txt: Added.
        * platform/mac/accessibility/input-slider.html: Moved from
        accessibility/input-slider.html, since it is platform-specific.
        * platform/win/Skipped: Unskipped accessibility/input-slider.html,
        as it's no longer a cross-platform test.
2011-04-11  Mario Sanchez Prada  <msanchez@igalia.com>

        Reviewed by Chris Fleizach.

        [GTK] Unskip accessibility/input-slider.html and accessibility/media-element.html
        https://bugs.webkit.org/show_bug.cgi?id=58040

        Don't expose objects of role SliderThumbRoles in GTK.

        * accessibility/AccessibilitySlider.cpp:
        (WebCore::AccessibilitySlider::addChildren): Allow the platform
        make a final decision before including children in the hierarchy.
        (WebCore::AccessibilitySliderThumb::accessibilityIsIgnored):
        Implemented by relying on accessibilityPlatformIncludesObject().

        * accessibility/gtk/AccessibilityObjectAtk.cpp:
        (WebCore::AccessibilityObject::accessibilityPlatformIncludesObject):
        Ignore accessibility objects with role SliderThumbRole.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@83479 268f45cc-cd09-0410-ab3c-d52691b4dbfc