GitLab

Create PageInfoSubpageController and PageInfoSubpage for control
of a specific section of the page info v2. Componentized the cookies
section as an example.
https://screenshot.googleplex.com/XnhMwuBkVzG.png

Bug: 1077766
Change-Id: I7bf71c62859bcae7b2f24bd9509947c003a51c06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2209070
Commit-Queue: Ehimare Okoyomon <eokoyomon@chromium.org>
Reviewed-by: Balazs Engedy <engedy@chromium.org>
Reviewed-by: Christian Dullweber <dullweber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772697}