Merge "Optimizing: Reduce arena memory used by GraphChecker." am: 6f51d77
am: 80ec300

* commit '80ec300c68d58180ad68169930f56b86d0a3eaa7':
  Optimizing: Reduce arena memory used by GraphChecker.

Change-Id: I778fe511e30d7c57582fba273c8f1d857b509fe0