The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/470c50fcfc81c93f1a028e31840a97e05896519e

commit 470c50fcfc81c93f1a028e31840a97e05896519e
Author: Gauthier Ambard <gambard@chromium.org>
Date: Thu Dec 21 07:55:29 2017

Use LayoutGuide instead of frame for history popup

This CL changes the history popup such as it is now using named layout
guide instead of asking for the frame of the buttons.
This is only enabled for the CleanToolbar as the old toolbar is not
using autolayout.

Bug:  788368 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Ib1777393ba0038044a691cd89772191ee5d434ed
Reviewed-on: https://chromium-review.googlesource.com/836596
Reviewed-by: Mark Cogan <marq@chromium.org>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#525641}
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/browser_view_controller.mm
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/history_popup/BUILD.gn
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/history_popup/requirements/tab_history_positioner.h
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/history_popup/tab_history_legacy_coordinator.mm
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/toolbar/clean/toolbar_view_controller.mm
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/util/named_guide.h
[modify] https://crrev.com/470c50fcfc81c93f1a028e31840a97e05896519e/ios/chrome/browser/ui/util/named_guide.mm