Browser crash when GPS provider not available

Google websites using GPS were causing Browser crash because Browser
was not handling the case where GPS functionality is not available
on the device. In this case starting of GpslocationService raises the
unhandled exception. Addded the case to handle the exception so that
Browser does not crash when there is problem in GPS service.

Change-Id: If95fbe4fd40dd52696773966054f176eca52f855
CR-Fixes: 269624