Maybe fix issue #9296868: Crash in system process

There were some paths in LocationManagerService where
mRecivers was being accessed/modified without the lock held.
Update method names to indicate they need to be called with
lock held to make it more clear in the future when such a
problem may happen.

Change-Id: Ie2a9d019155ac7cedd1db298caca75b8fe382ca7
1 file changed