Fix comment.

This CL lands part of internal change 201519764.  The rest of that
change has been merged in https://crrev.com/c/1121700 (reviewed at
https://crrev.com/c/1121285).

Bug: 488484
Change-Id: I78b225c43af626eb7c6e3054b85e44018387b8cb
Reviewed-on: https://chromium-review.googlesource.com/1146664
Commit-Queue: Yang Song <yasong@chromium.org>
Reviewed-by: Yang Song <yasong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577927}
1 file changed