Attempt to reduce problems from issue #3183612

java.lang.SecurityException: Neither user 1209 nor current...
...process has android.permission.WAKE_LOCK.

It looks like, somehow, the calling uid/pid of the SyncHandler
thread is getting corrupted.  This change has Looper check for
these values changing from their original defaults and, if there
is a problem, resetting them and logging a WTF.  Hopefully this
will avoid crashing the process, while also giving us more
helpful error reports about what is going on.

Change-Id: Iff06d575951fb8c06e2a3c31141f2907a715eb81