GitLab

This CL adds a new WebFeature metric for pages that are embedded via
<frame> or <iframe> by default, without explicitly setting an
X-Frame-Options header or frame-ancestors CSP directive.

https://github.com/mikewest/embedding-requires-opt-in

Bug: 1153274
Change-Id: I5bb45df3eb2aec0010f2ddd2dfe457551de9d40d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2623010
Commit-Queue: Mike West <mkwst@chromium.org>
Reviewed-by: Arthur Sonzogni <arthursonzogni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842597}