Fix the oilpan build break after r367789.

See https://codereview.chromium.org/1530643003/#msg35
The CL did not use HeapVector nor HeapHashMap.

BUG=531990

Review URL: https://codereview.chromium.org/1562013002

Cr-Commit-Position: refs/heads/master@{#367812}
1 file changed