tree 765ff7d49c4a9016bfbdf92a43f2aed2c0d0f4d3
parent 4884ba0c06fbd167a29a057787f4f35160d2ebd1
author Mathieu Chartier <mathieuc@google.com> 1399588051 -0700
committer Mathieu Chartier <mathieuc@google.com> 1399593569 -0700

Use WaitHoldingLocks in ReferenceProcessor::GetReferent.

The caller may be holding other locks, so we must use this or else
we get bad mutexes held errors. Also added a lock level for the
reference processor.

Change-Id: I364a303a4106982bd9bfaac5b116cea1638ea6d3