DO NOT MERGE: debuggerd: verify that traced threads belong to the right process. am: 36dd144367 am: 9048b3bb8e am: 6cb199bf4a  -s ours am: 851f840835
am: be484f3f7b

Change-Id: I1c9a4f7cdec227e78910678f05e6232a60f05bb1