GitLab

This CL continues with the abstraction of dependencies on signin and
sync from //components/safe_browsing's access token fetching flow in
order to enable reuse by WebLayer. The concrete step taken here is to
abstract the dependencies on
//components/safe_browsing/core/browser/sync from
RealTimeUrlLookupService, passing these dependencies in via the
constructor. There are no behavioral changes in this CL:
- //chrome and //ios/chrome's factories glue the relevant parameters
  from //components/safe_browsing/core/browser/sync
- //weblayer's factory passes in values for the parameters such that
  access token fetching for URL lookups continues to be disabled in
  WebLayer

Followup work will bring up support for access token fetching in
WebLayer.

Bug: 1080748
Change-Id: I69fca4b2d04118088bb48596eb192beab7bafb4f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2621301Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Xinghui Lu <xinghuilu@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842942}