The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4034ce7fe406bdd487b37dd06744498f682f7de4

commit 4034ce7fe406bdd487b37dd06744498f682f7de4
Author: Jian Li <jianli@chromium.org>
Date: Fri Aug 18 23:59:57 2017

[Offline Prefetch] Add scheduling parameters for downloads

Bug:  736156 
Change-Id: Ib95c273c4d6de11043386338620972413840cc4a
Reviewed-on: https://chromium-review.googlesource.com/621987
Commit-Queue: Jian Li <jianli@chromium.org>
Reviewed-by: Dmitry Titov <dimich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#495751}
[modify] https://crrev.com/4034ce7fe406bdd487b37dd06744498f682f7de4/components/offline_pages/core/prefetch/prefetch_downloader_impl.cc