The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3d26cbcc4936076acfbbdb7e549d794b17cb484e

commit 3d26cbcc4936076acfbbdb7e549d794b17cb484e
Author: stkhapugin@chromium.org <stkhapugin@chromium.org>
Date: Tue Jun 26 13:15:56 2018

[iOS] Fix jumping omnibox text when toggling inline autocomplete.

Align the inline autocomplete label with the textfield's text area to
avoid the jumping of the text.

Bug:  856539 
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I162bdc6dec52faa05539e3fdb37bcf6509eeb650
Reviewed-on: https://chromium-review.googlesource.com/1114739
Reviewed-by: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570390}
[modify] https://crrev.com/3d26cbcc4936076acfbbdb7e549d794b17cb484e/ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm