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Add support for safety check safe state and issues.

Issues support includes deleting/managing in settings and on site.

Add support for password check error popovers.

Tests coming in later cl

Bug: 1078782
Change-Id: I6c2b388fce4d397a1c1e01d161b4e0b35c91e9b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339322Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Sean Harrison <harrisonsean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797251}