selectable states are not reported

https://bugs.webkit.org/show_bug.cgi?id=33574
<rdar://problem/7536826>

Reviewed by Darin Adler.

WebCore:

* accessibility/AccessibilityObject.h:
(WebCore::AccessibilityObject::isMultiSelectable):
Use the correct function name - the function name overriden by
and used in AccessiblityRenderObject.

* accessibility/gtk/AccessibilityObjectWrapperAtk.cpp:
(setAtkStateSetFromCoreObject):
Update for function rename.
(webkit_accessible_selection_select_all_selection):
Ditto.

WebKit/chromium:

* public/WebAccessibilityObject.h:
Update for WebCore::AccessibilityObject function rename.

* src/WebAccessibilityObject.cpp:
(WebKit::WebAccessibilityObject::isMultiSelectable):
Ditto.

WebKit/win:

* AccessibleBase.cpp:
(AccessibleBase::get_accState):
Remove the call to isMultiSelect(). Call the correctly-named
isMultiSelectable(), and if it returns true, set both the "extended
selectable" and "multiple selectable" states. Check whether the object
is selected or selectable, and report those states.

WebKitTools:

* DumpRenderTree/AccessibilityUIElement.cpp:
(getIsSelectableCallback):
Return the result of calling isSelectable().
(getIsMultiSelectableCallback):
Return the result of calling isMultiSelectable().
(AccessibilityUIElement::getJSClass):
Add isSelected and isMultiSelectable properties to the JSClass
definition.

* DumpRenderTree/AccessibilityUIElement.h:
Declare isSelectable() and isMultiSelectable().

* DumpRenderTree/gtk/AccessibilityUIElementGtk.cpp:
(AccessibilityUIElement::isSelectable):
Stubbed.
(AccessibilityUIElement::isMultiSelectable):
Stubbed.

* DumpRenderTree/mac/AccessibilityUIElementMac.mm:
(AccessibilityUIElement::isSelectable):
Stubbed.
(AccessibilityUIElement::isMultiSelectable):
Stubbed.

* DumpRenderTree/win/AccessibilityUIElementWin.cpp:
(accessibilityState):
Get the object's state, and return it.
(AccessibilityUIElement::isSelected):
Check the object's selected state.
(AccessibilityUIElement::isSelectable):
Check the object's selectable state.
(AccessibilityUIElement::isMultiSelectable):
Check the object's extended/multiple selectable state.

LayoutTests:

* accessibility/selection-states-expected.txt: Added.

* accessibility/selection-states.html: Added.

* platform/gtk/Skipped:
Add new test to skipped list due to stubbed AccessibilityUIElement
functions.

* platform/mac/Skipped:
Ditto.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@53220 268f45cc-cd09-0410-ab3c-d52691b4dbfc