GitLab

Move Incognito-related methods from PrefServiceBridge to IncognitoUtils.

This is part of a larger change to limit PrefServiceBridge to only
feature-agnostic logic related to the native PrefService.

Bug: 1016957
Change-Id: I82622c38daa7ada27c648a978ad76dbfe7a9ecb4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1909957Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715331}