Merge changes from topic 'am-295882f6444845b0a2bcae920cb1f84d' into nyc-mr2-dev-plus-aosp

* changes:
  Switch android.os.Debug to libdebuggerd_client. am: 3ce36960 am: 18e852e9 am: e84a0272
  app_process: don't use PR_SET_NO_NEW_PRIVS. am: 92517e4c am: b6025a2b am: f442f1bd
  Remove peercred check from NativeCrashListener. am: b9eb093c am: 9e5ef0e5 am: 3fa69351