[Extensions] Remove HasEffectiveAccessToAllHosts in PermissionsData

HasEffectiveAccessToAllHosts() is a forward for the active
permissions that acquires a lock for the permissions. This allows non-
UI (main) threads to safely query the permissions data for these
methods.

The previous uses of that have been moved to the UI thread, thus callers
can now use active_permissions() to directly compute the access. That way, we can remove HasEffectiveAccessToAllHosts.

Bug: n/a
Change-Id: I0dcbdbb8d887f6f020e4017308b47b8ce07ba619
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5169702
Reviewed-by: Devlin Cronin <rdevlin.cronin@chromium.org>
Commit-Queue: Emilia Paz <emiliapaz@chromium.org>
Auto-Submit: Emilia Paz <emiliapaz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1244115}