The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f8c542f8ee61111d80dec32ba406478aa407e1b6

commit f8c542f8ee61111d80dec32ba406478aa407e1b6
Author: Alex Newcomer <newcomer@chromium.org>
Date: Mon Aug 13 23:48:50 2018

cros: Disable webstore search

At request of PM, disable webstore search.

Bug:  872949 
Change-Id: I7d696f5f102c3a5b507fb59a4ff7aa240bdd7d0f
Reviewed-on: https://chromium-review.googlesource.com/1170993
Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Commit-Queue: Alex Newcomer <newcomer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582750}
[modify] https://crrev.com/f8c542f8ee61111d80dec32ba406478aa407e1b6/chrome/browser/extensions/external_provider_impl.cc
[modify] https://crrev.com/f8c542f8ee61111d80dec32ba406478aa407e1b6/components/arc/arc_util.cc