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This CL adds a new app permission view settings subpage to display
the different permission views.

Bug: 919531
Change-Id: I85896670dd3ca9d8e9514d337265cbf73b26e181
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1772873
Commit-Queue: Jeevan Shikaram <jshikaram@chromium.org>
Reviewed-by: calamity <calamity@chromium.org>
Cr-Commit-Position: refs/heads/master@{#692057}