GitLab

We no longer need to display withheld permissions in the
extension install prompt, even with the runtime host permissions
feature enabled. Clean up the relevant code.

Bug: 841099

Change-Id: If295d36859f8664928c83923a010057f2fb4d1c1
Reviewed-on: https://chromium-review.googlesource.com/1053178Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558882}