The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e3b83b425b9ee162a3adeed3663ead2d692cd1ff

commit e3b83b425b9ee162a3adeed3663ead2d692cd1ff
Author: Gauthier Ambard <gambard@chromium.org>
Date: Fri Feb 02 15:33:35 2018

Update the animations when focusing the omnibox

This CL changes the animations when focusing the omnibox to expand the
location bar to take the full width of the screen and hide the buttons.

Bug:  804751 ,  804749 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I71653dddb10323a55f660f4b9432b3ec112584b7
Reviewed-on: https://chromium-review.googlesource.com/899146
Reviewed-by: Peter Lee <pkl@chromium.org>
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#534056}
[modify] https://crrev.com/e3b83b425b9ee162a3adeed3663ead2d692cd1ff/ios/chrome/browser/ui/orchestrator/omnibox_focus_orchestrator.mm
[modify] https://crrev.com/e3b83b425b9ee162a3adeed3663ead2d692cd1ff/ios/chrome/browser/ui/toolbar/adaptive/primary_toolbar_view.mm
[modify] https://crrev.com/e3b83b425b9ee162a3adeed3663ead2d692cd1ff/ios/chrome/browser/ui/toolbar/adaptive/primary_toolbar_view_controller.mm
[modify] https://crrev.com/e3b83b425b9ee162a3adeed3663ead2d692cd1ff/ios/chrome/browser/ui/toolbar/clean/toolbar_constants.h
[modify] https://crrev.com/e3b83b425b9ee162a3adeed3663ead2d692cd1ff/ios/chrome/browser/ui/toolbar/clean/toolbar_constants.mm