GitLab

This CL enables the interstitial by default for lookalike domains in
user's navigation history (i.e. site engagement). Matching with top
domains is controlled by the topsites parameter.

Change-Id: Ib636fb4256de88b037549d964e9da551a1ddf592
Bug: 933520
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1674253Reviewed-by: Joe DeBlasio <jdeblasio@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Mustafa Emre Acer <meacer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672714}