https://bugs.webkit.org/show_bug.cgi?id=28200

Reviewed by Darin Adler.

When returning text through the marker range attributes, the list marker text should
also be included. It isn't included by default because a TextIterator is used which
only looks at Nodes for text. A list marker does not have a corresponding node,
so its text is not returned through accessibility. That is, until now.

Test: platform/mac/accessibility/string-range-contains-listmarker.html

* accessibility/AccessibilityObject.cpp:
(WebCore::AccessibilityObject::listMarkerTextForRange):
(WebCore::AccessibilityObject::stringForVisiblePositionRange):
* accessibility/AccessibilityObject.h:
* accessibility/mac/AccessibilityObjectWrapper.mm:
(-[AccessibilityObjectWrapper doAXAttributedStringForTextMarkerRange:]):
(-[AccessibilityObjectWrapper accessibilityParameterizedAttributeNames]):
(-[AccessibilityObjectWrapper accessibilityAttributeValue:forParameter:]):
* rendering/RenderListItem.h:

Make markerText() public so that accessibility code can access it.

WebKitTools: Bug 28200 - ListMarker should be included as part of the text value to parse
https://bugs.webkit.org/show_bug.cgi?id=28200

Reviewed by Darin Adler.

Add the ability to retrieve a string given a plain NSRange.

* DumpRenderTree/AccessibilityUIElement.cpp:
(stringForRangeCallback):
(AccessibilityUIElement::getJSClass):
* DumpRenderTree/AccessibilityUIElement.h:
* DumpRenderTree/mac/AccessibilityUIElementMac.mm:
(AccessibilityUIElement::valueDescription):
(AccessibilityUIElement::stringForRange):
* DumpRenderTree/win/AccessibilityUIElementWin.cpp:
(AccessibilityUIElement::stringForRange):

LayoutTests: Bug 28200 - ListMarker should be included as part of the text value to parse
https://bugs.webkit.org/show_bug.cgi?id=28200

Reviewed by Darin Adler.

Tests for checking that the list marker text is included when asking for text 
through accessibility.

* platform/mac/accessibility/bounds-for-range-expected.txt.
* platform/mac/accessibility/string-range-contains-listmarker-expected.txt: Added.
* platform/mac/accessibility/string-range-contains-listmarker.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@47076 268f45cc-cd09-0410-ab3c-d52691b4dbfc