For sorting out regressions.

BUG=v8:5516

Change-Id: I117667346b5de33c1cadd250e4a0d4f2dc807227
Reviewed-on: https://chromium-review.googlesource.com/690077Reviewed-by: Michael Hablich <hablich@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48203}