The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/85fa2e1d9764989c5674ebf9ff0730f79aa9adf0

commit 85fa2e1d9764989c5674ebf9ff0730f79aa9adf0
Author: Peter Boström <pbos@chromium.org>
Date: Fri Mar 16 20:43:40 2018

Add entry to top-chrome-md for Material refresh

Adds material-refresh to top-chrome-md under chrome://flags for
upcoming Material style changes.

Bug:  chromium:822040 

Change-Id: Ibc5ce5ead8462a56f04b80b637406d5726665c09
Reviewed-on: https://chromium-review.googlesource.com/961275
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543815}
[modify] https://crrev.com/85fa2e1d9764989c5674ebf9ff0730f79aa9adf0/chrome/browser/about_flags.cc
[modify] https://crrev.com/85fa2e1d9764989c5674ebf9ff0730f79aa9adf0/chrome/browser/flag_descriptions.cc
[modify] https://crrev.com/85fa2e1d9764989c5674ebf9ff0730f79aa9adf0/chrome/browser/flag_descriptions.h
[modify] https://crrev.com/85fa2e1d9764989c5674ebf9ff0730f79aa9adf0/ui/base/ui_base_switches.cc
[modify] https://crrev.com/85fa2e1d9764989c5674ebf9ff0730f79aa9adf0/ui/base/ui_base_switches.h