GitLab

Reauth dialog uses SigninViewControllerDelegateViews as a webview
container. Relevant navigation events are handled by ReauthTabHelper.

SigninViewControllerDelegateViews required a slight change to display
a close button in the top right corner.

Bug: 1045515
Change-Id: I688b93eef8e8549aaf1c489c73655378e4e858ef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2111100
Commit-Queue: Alex Ilin <alexilin@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753587}