GitLab

Move ContentSettings-related methods from PrefServiceBridge to
WebsitePreferenceBridge.

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

Bug: 1016957
Change-Id: Id0f8dbca0444a3deaeb66ef64229066032b0d29e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1902258
Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
Reviewed-by: Kamila Hasanbega <hkamila@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714348}