Include any background activity start whitelist tokens in a
ProcessRecord's dump().

Bug: 129255292
Test: manual, the dumpsys output for a process now has this added:
    Background activity start whitelist tokens:
      - BroadcastRecord{2d2263e u0 null}

Change-Id: Ia4d212ce8c3c3fd403bc311ed563f02d4d6bf957
1 file changed