DevTools: respect permission overrides on the chrome level.

This is a follow up to the content-side change, we need chrome
to respect these overrides as well when the check originates
outside of the web platform.

Bug: 631464
Change-Id: I8300a17d6b2b65140aef8232a58a694e56a709e3
Reviewed-on: https://chromium-review.googlesource.com/c/1308935
Commit-Queue: Pavel Feldman <pfeldman@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604815}
6 files changed