commit 3d1eeda22c21de0ee57f805ec718dedd1cbeba77
author Hansong Zhang <hsz@google.com> Thu Apr 05 10:01:01 2018 -0700
committer Hansong Zhang <hsz@google.com> Wed Apr 11 14:04:42 2018 -0700
tree b5688d09b57109a424f93f37f0186367f22f8e32
parent 07254c04e4510ecdde3f2c22ca5b0dcb7ef4caef

Scan manager: Suspend scan when location is off

* Add a broadcast receiver to listen for location on/off event. When
location is off, send SUSPEND_SCAN message; when location is on, send
RESUME_SCAN message
* In handleStartScan(), suspend the scan if location is off, unless it
is a filtered scan or issued by a legacy app
* Both location on/off and display on/off events are handled in
HandlerThread, so there is no collision

Test: manual
Bug: 73485839
Change-Id: Ie7adcd91afbb95e2bd231a11ed557915583f1d6c