Fix Atrace bug that last tag can't be set.

This patch fix bug of"Enable Traces" that the last tag of Atrace cannot
be selected,it always shows unchecked after adb shell stop/start

Change-Id: I39fe93e6485dfc3a4e153c8d1f9b2d8fde7eebd2
Author: Heng Yang <heng.yang@intel.com>
Signed-off-by: Shuo Gao <shuo.gao@intel.com>
Signed-off-by: Jian Luo <jian.luo@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 52060