[BlackBerry] Speed up processing of Selection region generation.

[BlackBerry] Speed up processing of Selection region generation.
https://bugs.webkit.org/show_bug.cgi?id=82766

Reviewed by Rob Buis.

PR 136593.

Re-speed up text selection.  The previous patch had a merge
error causing text selection not to function.  The fix
implemented removed the optimization.  This fixes the error
in the original patch and removes the temporary fix.

Make style updated as suggested by Antonio Gomes.

Reviewed Internally by Gen Mak.

* WebKitSupport/SelectionHandler.cpp:
(BlackBerry::WebKit::SelectionHandler::regionForTextQuads):
(BlackBerry::WebKit::regionRectListContainsPoint):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@113987 268f45cc-cd09-0410-ab3c-d52691b4dbfc