[iOS] Option to prevent user interaction in settings

This CL adds an option to prevent the user interactions in the settings
panels backed with a TableView.
This feature already exists for the panels backed with a Collection.

Bug: 894791
Change-Id: I80abf7c5f8dc0ae1d1c6ae5177a6f55ec44ff1f1
Reviewed-on: https://chromium-review.googlesource.com/c/1373821
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Jérôme Lebel <jlebel@chromium.org>
Reviewed-by: Yi Su <mrsuyi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616703}
2 files changed