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This CL is exactly the same as the previously landed versions, but I
landed a CL which fixes the errors in asan tests, linked below, so this
should be safe.

https://chromium-review.googlesource.com/c/chromium/src/+/1180073

TBR=xiyuan@chromium.org,sky@chromium.org,newcomer@chromium.org

Bug: 871843
Change-Id: I259e2c1177d05b050cea5638818a01cc82f24ea7
Reviewed-on: https://chromium-review.googlesource.com/1181770Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Commit-Queue: Alex Newcomer <newcomer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584789}