DO NOT MERGE: debuggerd: verify that traced threads belong to the right process. am: 0528829b73  -s ours am: b9b6ec3644 am: 5920345eeb am: cb4d905c96  -s ours am: e467cced5c
am: 174579d6ef

Change-Id: Ie3efaa41bacc640286a3aa6cfe353b16c707f15f