Reviewed by Martin Robinson.

        [GTK] Combo boxes should emit object:selection-changed even when collapsed
        https://bugs.webkit.org/show_bug.cgi?id=53146

        New GTK-specific layout test to check the right signals are emitted.

        * platform/gtk/accessibility/combo-box-collapsed-selection-changed-expected.txt: Added.
        * platform/gtk/accessibility/combo-box-collapsed-selection-changed.html: Added.
2011-03-03  Mario Sanchez Prada  <msanchez@igalia.com>

        Reviewed by Martin Robinson.

        [GTK] Combo boxes should emit object:selection-changed even when collapsed
        https://bugs.webkit.org/show_bug.cgi?id=53146

        Emit the selection-changed signals when the menu list value has changed

        Test: platform/gtk/accessibility/combo-box-collapsed-selection-changed.html

        * accessibility/gtk/AXObjectCacheAtk.cpp:
        (WebCore::getListObject): New, return the right list object for
        menu lists and list boxes.
        (WebCore::notifyChildrenSelectionChange): Support menu lists.
        (WebCore::AXObjectCache::postPlatformNotification): Call function
        notifyChildrenSelectionChange for AXMenuListValueChanged.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@80214 268f45cc-cd09-0410-ab3c-d52691b4dbfc