tree 0863e0d1ac4c765810de52bbdb48269cd1702acc
parent 0bebfe76fc216ce2b1b7405eec93c9fe21f5a059
author Jerry Zhang <zhangjerry@google.com> 1476320643 -0700
committer Jerry Zhang <zhangjerry@google.com> 1479252562 -0800

Fixed handling of usb state during adb changes.

When changing state to adb from mtp (charging), we want to disable
the old mtp function. Similarly when change to away from adb to
charging, enable the mtp function.

Also the mtp function should never be persisted.

Bug: 31818377
Bug: 31814300
Test: Manually verify that the correct usb configuration is displayed.
Test: Manually verify that logcat is not kicked during boot.
Change-Id: Idcb7f53be39ea38712d5de45b323d8daeb552129
(cherry-picked from commit 58018d01a3c384b954275d15bee7f9c52a1c7c0a)