Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=32571

        Added a test to make sure that ARIA checkboxes correctly handle the aria-checked attribute.

        * accessibility/aria-checkbox-checked-expected.txt: Added.
        * accessibility/aria-checkbox-checked.html: Added.
2010-01-05  Dominic Mazzoni  <dmazzoni@google.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=32571

        For an object with an aria role of "checkbox" or "radiobutton",
        Use the "aria-checked" attribute to determine if it's checked.

        Test: accessibility/aria-checkbox-checked.html

        * accessibility/AccessibilityRenderObject.cpp:
        (WebCore::AccessibilityRenderObject::isChecked):
2010-01-05  Dominic Mazzoni  <dmazzoni@google.com>

        Reviewed by Darin Adler.

        https://bugs.webkit.org/show_bug.cgi?id=32571

        For an object with an aria role of "checkbox" or "radiobutton",
        use the "aria-checked" attribute to determine if it's checked.
        These changes add an isChecked() method to AccessibilityUIElement
        so that we can check for this property from a layout test.

        * DumpRenderTree/AccessibilityUIElement.cpp:
        (getIsCheckedCallback):
        (AccessibilityUIElement::getJSClass):
        * DumpRenderTree/AccessibilityUIElement.h:
        * DumpRenderTree/gtk/AccessibilityUIElementGtk.cpp:
        (AccessibilityUIElement::isChecked):
        * DumpRenderTree/mac/AccessibilityUIElementMac.mm:
        (AccessibilityUIElement::isChecked):
        * DumpRenderTree/win/AccessibilityUIElementWin.cpp:
        (AccessibilityUIElement::isChecked):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@52809 268f45cc-cd09-0410-ab3c-d52691b4dbfc