https://bugs.webkit.org/show_bug.cgi?id=96076

Reviewed by Chris Fleizach.

Make an ARIA spin button support ARIA range attributes like
aria-valuenow, aria-valuemin, etc. - just like slider, progressbar,
and scrollbar.

Test: accessibility/spinbutton-value.html

* accessibility/AccessibilityObject.h:
(WebCore::AccessibilityObject::isSpinButton):
* accessibility/AccessibilityRenderObject.cpp:
(WebCore::AccessibilityRenderObject::valueDescription):
(WebCore):
(WebCore::AccessibilityRenderObject::isAriaRange):
(WebCore::AccessibilityRenderObject::valueForRange):
(WebCore::AccessibilityRenderObject::maxValueForRange):
(WebCore::AccessibilityRenderObject::minValueForRange):
(WebCore::AccessibilityRenderObject::stringValue):
(WebCore::AccessibilityRenderObject::title):
(WebCore::AccessibilityRenderObject::isGenericFocusableElement):
(WebCore::AccessibilityRenderObject::ariaRoleHasPresentationalChildren):
* accessibility/AccessibilityRenderObject.h:
(AccessibilityRenderObject):
* accessibility/mac/WebAccessibilityObjectWrapper.mm:
(-[WebAccessibilityObjectWrapper accessibilityAttributeValue:]):

Source/WebKit/chromium: AX: ARIA spin button should support range value attributes
https://bugs.webkit.org/show_bug.cgi?id=96076

Reviewed by Chris Fleizach.

Expose supportsRangeValue to simplify Chromium logic for when to
extract a value from a range.

* public/WebAccessibilityObject.h:
(WebAccessibilityObject):
* src/WebAccessibilityObject.cpp:
(WebKit::WebAccessibilityObject::supportsRangeValue):
(WebKit):

Tools: New time input needs accessibility
https://bugs.webkit.org/show_bug.cgi?id=96032

Reviewed by Chris Fleizach.

Add support for valueDescription for testing.

* DumpRenderTree/chromium/TestRunner/AccessibilityUIElementChromium.cpp:
(getValueDescription):
(AccessibilityUIElement::AccessibilityUIElement):
(AccessibilityUIElement::valueDescriptionGetterCallback):
* DumpRenderTree/chromium/TestRunner/AccessibilityUIElementChromium.h:
(AccessibilityUIElement):

LayoutTests: AX: ARIA spin button should support range value attributes
https://bugs.webkit.org/show_bug.cgi?id=96076

Reviewed by Chris Fleizach.

Test that an ARIA spin button exposes ARIA range attributes like
aria-valuenow, aria-valuemin, etc.

* accessibility/spinbutton-value-expected.txt: Added.
* accessibility/spinbutton-value.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@127882 268f45cc-cd09-0410-ab3c-d52691b4dbfc