The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2f5fdb1ac067bf60fb5dc7b801ef71f121537d10

commit 2f5fdb1ac067bf60fb5dc7b801ef71f121537d10
Author: Will Chen <chenwilliam@chromium.org>
Date: Mon Dec 18 22:54:46 2017

DevTools: allow opt-out of what's new updates

A small segment of users have reported that it's annoying to
see new what's new updates. This creates a setting so they can opt-out of
getting auto-shown the new updates for what's new.

Bug:  795849 
Change-Id: I9eb3e6900c03817344bd694176d52da7e0441b1f
Reviewed-on: https://chromium-review.googlesource.com/833227
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Will Chen <chenwilliam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524841}
[modify] https://crrev.com/2f5fdb1ac067bf60fb5dc7b801ef71f121537d10/third_party/WebKit/LayoutTests/http/tests/devtools/help/release-note-unit-expected.txt
[modify] https://crrev.com/2f5fdb1ac067bf60fb5dc7b801ef71f121537d10/third_party/WebKit/LayoutTests/http/tests/devtools/help/release-note-unit.js
[modify] https://crrev.com/2f5fdb1ac067bf60fb5dc7b801ef71f121537d10/third_party/WebKit/Source/devtools/front_end/help/Help.js
[modify] https://crrev.com/2f5fdb1ac067bf60fb5dc7b801ef71f121537d10/third_party/WebKit/Source/devtools/front_end/help/module.json

 Issue 762162  has been merged into this issue.

Will, Can we add a "Never Show Again" button to the UI?