[BlackBerry] Reverse the base and extent of a selection when reversing its handles
https://bugs.webkit.org/show_bug.cgi?id=111098

Reviewed by Yong Li.

PR283969
Swap the base and extent if base does not come first, and set the new selection.

Internally reviewed by Mike Fenton

* WebKitSupport/SelectionHandler.cpp:
(BlackBerry::WebKit::SelectionHandler::setSelection):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144454 268f45cc-cd09-0410-ab3c-d52691b4dbfc