[BlackBerry] Increase padding for text element

[BlackBerry] Increase padding for text element
https://bugs.webkit.org/show_bug.cgi?id=83903

Patch by Yongxin Dai <yodai@rim.com> on 2012-04-16
Reviewed by Antonio Gomes.

PR 125888

Increase the padding value for focused text element to make selection handle
at least partially visible when the user is dragging at edge of viewport
in in-region scoll mode.

Reviewed internally by Mike Fenton.

* WebKitSupport/InputHandler.cpp:
(BlackBerry::WebKit::InputHandler::ensureFocusTextElementVisible):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114282 268f45cc-cd09-0410-ab3c-d52691b4dbfc