The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/549bcac9e03c43ec783470b3715ca6a7a4ba8f29

commit 549bcac9e03c43ec783470b3715ca6a7a4ba8f29
Author: Justin DeWitt <dewittj@chromium.org>
Date: Fri Nov 16 23:11:20 2018

[EoS] Add a fieldtrial config before launching to beta/stable.

Bug:  904986 , 906151
Change-Id: I5aef21b730446234742c2420435aeba8fb81f76e
Reviewed-on: https://chromium-review.googlesource.com/c/1334274
Commit-Queue: Justin DeWitt <dewittj@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609016}
[modify] https://crrev.com/549bcac9e03c43ec783470b3715ca6a7a4ba8f29/chrome/android/javatests/src/org/chromium/chrome/browser/ntp/NewTabPageTest.java
[modify] https://crrev.com/549bcac9e03c43ec783470b3715ca6a7a4ba8f29/chrome/android/javatests/src/org/chromium/chrome/browser/suggestions/TileGridLayoutTest.java
[modify] https://crrev.com/549bcac9e03c43ec783470b3715ca6a7a4ba8f29/testing/variations/fieldtrial_testing_config.json