GitLab

Attach a WKWebView to the view so cookies can be set correctly.
Also adding clearing cookies between tests.

Bug: 1121425
Change-Id: Ib2fabd80040963e7c8a9a76a9a5eb3fe66def589
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2423052Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Justin Cohen <justincohen@chromium.org>
Commit-Queue: Mohammad Refaat <mrefaat@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809602}