Per offline discussion, it has been acted that the "unseen" state in the tools menu won't be done in UI Refresh.
The tools menu button won't change color and the tools menu entry/badge won't change color.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b926fe9e867eed4b9fba5c403a0a80458fd00690

commit b926fe9e867eed4b9fba5c403a0a80458fd00690
Author: Gauthier Ambard <gambard@chromium.org>
Date: Tue Apr 17 12:34:12 2018

Remove the unseen state in UI Refresh

This CL removes the unseen state (in the tools menu button in the
toolbar) when the UI Refresh flag is enabled.

Bug:  828367 , 831134
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I4446d5b4f2565f256e4fedb829a77e93295b0d00
Reviewed-on: https://chromium-review.googlesource.com/1014092
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551302}
[modify] https://crrev.com/b926fe9e867eed4b9fba5c403a0a80458fd00690/ios/chrome/browser/ui/popup_menu/popup_menu_mediator.mm
[modify] https://crrev.com/b926fe9e867eed4b9fba5c403a0a80458fd00690/ios/chrome/browser/ui/toolbar/buttons/toolbar_tools_menu_button.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/950668ec9ebb69e439726de235df94cd839fe0ce

commit 950668ec9ebb69e439726de235df94cd839fe0ce
Author: Gauthier Ambard <gambard@chromium.org>
Date: Tue May 22 14:54:53 2018

Add separator for TabGrid popup menu

This CL adds a separator between the additive and destructive actions
of the TabGrid popup menu.
The separator is automatically added between sections, so this CL is
putting the additive and destructive actions in two separate sections.

Bug: 821560,  828367 ,  845475 
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I1769a63aa7d968f31ce3a5854164b81fb80e705b
Reviewed-on: https://chromium-review.googlesource.com/1069068
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560584}
[modify] https://crrev.com/950668ec9ebb69e439726de235df94cd839fe0ce/ios/chrome/browser/ui/popup_menu/popup_menu_mediator.mm
[modify] https://crrev.com/950668ec9ebb69e439726de235df94cd839fe0ce/ios/chrome/browser/ui/popup_menu/popup_menu_table_view_controller.mm

Verified in 69.0.3444.0 Canary, iPhone X iOS 11.4 beta 6, iPhone 6 iOS 10.3.3, iPhone 7 iOS 

TabGrid popup menu separator is added.