GitLab

When Chrome is restarted, tabs are initially in a frozen state and have
no WebContents. History deletions need to clean up this frozen state
to correctly remove navigation entries.

Add integration tests for deletion of navigation entries from regular
and frozen tabs.

Bug: 407074
Change-Id: Id69ffcf05622f8e02eace0036e6787cea0b4dfab
Reviewed-on: https://chromium-review.googlesource.com/949323
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541768}