BMC#19078 handling of special URLs not consistent.
BMC#19078 handling of special URLs not consistent.

Handle urls with scheme 'chrome://' as 'about:blank' when disable chrome's
web ui.

Reviewed by James


Former-commit-id: 8fd12cc7ff441b46d01188c585a38c6149b48e90
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser