The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/141c98bb911473e000a272ab4b8888c575621d4e

commit 141c98bb911473e000a272ab4b8888c575621d4e
Author: Anthony Vallee-Dubois <anthonyvd@chromium.org>
Date: Wed Jul 11 14:22:58 2018

Properly register the ulp language_profile pref

The pref was gated on being in the Heuristic Model experiment, which
isn't necessarily the case anymore. The pref should always be registered when
the Heuristic Model is chosen.

Bug:  862229 
Change-Id: I41fd77334edac643f43c638a6d56abc408242a53
Reviewed-on: https://chromium-review.googlesource.com/1131814
Reviewed-by: Michael Martis <martis@chromium.org>
Commit-Queue: anthonyvd <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574152}
[modify] https://crrev.com/141c98bb911473e000a272ab4b8888c575621d4e/chrome/browser/language/language_model_manager_factory.cc

Is it ok to mark this as Fixed?