The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/51d03fd632c82aef1fac1a73ddf74483214b56aa

commit 51d03fd632c82aef1fac1a73ddf74483214b56aa
Author: Xiaochu Liu <xiaochu@chromium.org>
Date: Fri Sep 08 23:51:02 2017

Enable termina (container) download in Chrome

Add a chrome flag to enable/disable (disabled by default)
container(termina) utility. After
being enabled, termina will be downloaded upon browser restart and kept
up-to-date. You can check version of termina in chrome://components.

After crbug.com/763415 is implemented, we move the component download
from browser restart to a crosh command while maintaining this flag.

BUG= chromium:763414 
TEST=enable flag on a chromebook and component get downloaded.

Change-Id: Idb53d62e220ba5530209460a74f70d750e0d6ee4
Reviewed-on: https://chromium-review.googlesource.com/658137
Commit-Queue: Xiaochu Liu <xiaochu@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#500744}
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/chrome/browser/about_flags.cc
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/chrome/browser/flag_descriptions.cc
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/chrome/browser/flag_descriptions.h
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/chrome/common/chrome_features.cc
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/chrome/common/chrome_features.h
[modify] https://crrev.com/51d03fd632c82aef1fac1a73ddf74483214b56aa/tools/metrics/histograms/enums.xml