The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cc724182d056a22d5b3869bcbb98828394f4af8d

commit cc724182d056a22d5b3869bcbb98828394f4af8d
Author: edchin <edchin@chromium.org>
Date: Thu Mar 08 17:15:06 2018

[ios] Grid empty states

This CL builds the basic logic and setup of the empty
states in the regular and incognito grids.

A future CL ( crbug.com/818198 ) will create a constants file
and consolidate/organize numbers as needed. This CL leaves
raw numbers in their place to minimize lookups while tweaking.

New raw strings will be internationalized through the process.

Bug:  804557 ,  804573 
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I546e88e195e1273bc34c2f2e5d8c4c2f48930263
Reviewed-on: https://chromium-review.googlesource.com/954714
Commit-Queue: edchin <edchin@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541816}
[modify] https://crrev.com/cc724182d056a22d5b3869bcbb98828394f4af8d/ios/chrome/browser/ui/tab_grid/grid_view_controller.h
[modify] https://crrev.com/cc724182d056a22d5b3869bcbb98828394f4af8d/ios/chrome/browser/ui/tab_grid/grid_view_controller.mm
[modify] https://crrev.com/cc724182d056a22d5b3869bcbb98828394f4af8d/ios/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm

The NextAction date has arrived: 2018-03-14