https://bugs.webkit.org/show_bug.cgi?id=110235

Patch by Yongxin Dai <yodai@rim.com> on 2013-02-20
Reviewed by Yong Li.

PR #257207.

Read "data-blackberry-text-selection-handle-position" attribute from element and pass it along
with notifySelectionDetailsChanged(). If "data-blackberry-text-selection-handle-position" attribute
is specified in the element, the selection handle is always flipped to the required position.
along with selected text within element.

Reviewed Internally by Mike Fenton.

* Api/WebPageClient.h:
* WebKitSupport/DOMSupport.cpp:
(BlackBerry::WebKit::DOMSupport::selectionContainerElement):
(DOMSupport):
(BlackBerry::WebKit::DOMSupport::elementHandlePositionAttribute):
* WebKitSupport/DOMSupport.h:
* WebKitSupport/SelectionHandler.cpp:
(BlackBerry::WebKit::SelectionHandler::requestedSelectionHandlePosition):
(WebKit):
(BlackBerry::WebKit::SelectionHandler::selectionPositionChanged):
* WebKitSupport/SelectionHandler.h:
(SelectionHandler):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@143461 268f45cc-cd09-0410-ab3c-d52691b4dbfc