The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0a79438c7215ed6a807f75cf16f66e46690e6234

commit 0a79438c7215ed6a807f75cf16f66e46690e6234
Author: Gauthier Ambard <gambard@chromium.org>
Date: Tue Jan 09 15:24:22 2018

Add configuration for ToolbarButtonVisibility

This CL adds a configuration object vending the visibility of the
different toolbar's buttons, based on the type of the toolbar.

Bug:  800274 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I186436b2df94163103ca2c4248eb431ad5683b0e
Reviewed-on: https://chromium-review.googlesource.com/856437
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Louis Romero <lpromero@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527996}
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/BUILD.gn
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_button.mm
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_button_factory.h
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_button_factory.mm
[add] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_button_visibility_configuration.h
[add] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_button_visibility_configuration.mm
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_component_options.h
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_coordinator.mm
[add] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_type.h
[modify] https://crrev.com/0a79438c7215ed6a807f75cf16f66e46690e6234/ios/chrome/browser/ui/toolbar/clean/toolbar_view_controller.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9e6619e75f9ac6d3e0744fdd8c8cf67b1ebf2bd0

commit 9e6619e75f9ac6d3e0744fdd8c8cf67b1ebf2bd0
Author: Gauthier Ambard <gambard@chromium.org>
Date: Wed Jan 10 16:16:16 2018

Update button visibility on the PrimaryToolbar

This CL changes the PrimaryToolbar so it updates the visibility of its
buttons. It also adds the missing buttons to it.

Bug:  800274 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Id784e7951107e6cbe73cb54db07625899ad0c56d
Reviewed-on: https://chromium-review.googlesource.com/860037
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Louis Romero <lpromero@chromium.org>
Cr-Commit-Position: refs/heads/master@{#528334}
[modify] https://crrev.com/9e6619e75f9ac6d3e0744fdd8c8cf67b1ebf2bd0/ios/chrome/browser/ui/toolbar/adaptive/primary_toolbar_view.h
[modify] https://crrev.com/9e6619e75f9ac6d3e0744fdd8c8cf67b1ebf2bd0/ios/chrome/browser/ui/toolbar/adaptive/primary_toolbar_view.mm
[modify] https://crrev.com/9e6619e75f9ac6d3e0744fdd8c8cf67b1ebf2bd0/ios/chrome/browser/ui/toolbar/adaptive/primary_toolbar_view_controller.mm
[modify] https://crrev.com/9e6619e75f9ac6d3e0744fdd8c8cf67b1ebf2bd0/ios/chrome/browser/ui/toolbar/clean/toolbar_button_visibility_configuration.mm

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6ae50fd58e3d4438bd2b460b7a06397056ea44c8

commit 6ae50fd58e3d4438bd2b460b7a06397056ea44c8
Author: Gauthier Ambard <gambard@chromium.org>
Date: Thu Jan 11 17:18:05 2018

Fix the visibility mask of the ToolbarButtons

This CL changes the visibility of the different toolbar buttons to match
what is expected from them.

Bug:  800274 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I520c504598718957cc4f0a838196c25398229bac
Reviewed-on: https://chromium-review.googlesource.com/861783
Reviewed-by: Louis Romero <lpromero@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#528653}
[modify] https://crrev.com/6ae50fd58e3d4438bd2b460b7a06397056ea44c8/ios/chrome/browser/ui/toolbar/adaptive/primary_toolbar_view.mm
[modify] https://crrev.com/6ae50fd58e3d4438bd2b460b7a06397056ea44c8/ios/chrome/browser/ui/toolbar/clean/toolbar_button_factory.h
[modify] https://crrev.com/6ae50fd58e3d4438bd2b460b7a06397056ea44c8/ios/chrome/browser/ui/toolbar/clean/toolbar_button_factory.mm
[modify] https://crrev.com/6ae50fd58e3d4438bd2b460b7a06397056ea44c8/ios/chrome/browser/ui/toolbar/clean/toolbar_button_visibility_configuration.h
[modify] https://crrev.com/6ae50fd58e3d4438bd2b460b7a06397056ea44c8/ios/chrome/browser/ui/toolbar/clean/toolbar_button_visibility_configuration.mm
[modify] https://crrev.com/6ae50fd58e3d4438bd2b460b7a06397056ea44c8/ios/chrome/browser/ui/toolbar/clean/toolbar_view.mm