Joomla CMS [#29922] Detect Chrome for iOS in browser.php

Fixes tracker item:
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_id=8103&tracker_item_id=29922

Simular (CriOS) to a previous fix for Chrome for Android (CrMo):
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=28039

An alternative approach is to put Chrome|CrMo|CriOS in the rame regexp... I prefer to keep them apart though - some redundant code, but better readability.