GitLab

Evidenced by issue 1014385, extensions may be using the names of
GuestViews for other purposes when a GuestView element is not available.
In order to avoid name collisions with user code, we no longer define
the error-providing elements in contexts where it is not possible to
declare the necessary permission.

Bug: 1014385
Change-Id: Icdf764c2bb19165cc173226e74e6f71eb7c99e1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1869399Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Reviewed-by: James MacLean <wjmaclean@chromium.org>
Commit-Queue: Kevin McNee <mcnee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712586}