GitLab

Follow-up from previous histogram CL:
https://chromium-review.googlesource.com/c/chromium/src/+/1250061/5
comments in cached_image_fetcher.h.

TBR=gab@chromium.org,nyquist@chromium.org

Bug: 888712
Change-Id: I8efa7f81a7ccf475f518b12516ea116837518586
Reviewed-on: https://chromium-review.googlesource.com/c/1285125
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Sky Malice <skym@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600840}