unified-heap: Adjust test expectations

No-try: true
Tbr: haraken@chromium.org
Bug: 843903
Change-Id: I9a130a70247807c593f94eff112d37d043055db2
Reviewed-on: https://chromium-review.googlesource.com/c/1340278
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609109}
3 files changed