tree 3cf35217f904e05e2288e8efc008a509ef13aca0
parent 61fe0f0d4cda596180add4c158652ad03574fbd5
author Dominic Farolino <dom@chromium.org> 1653658808 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1653659421 -0700

History rewrite: Add WPT for srcdoc policy container inheritance

This CL adds a test for storing the policy container in the history
entry for about:srcdoc documents. The HTML standard requires that the
policy container is inherited fresh from the parent for e.g., history
navigations to about:srcdoc documents, as per [1].

Chrome and Firefox both fail this test, and apparently store the policy
container on the history entry, meaning for about:srcdoc documents, the
CSPs can get out-of-date from the parent.

[1]: https://html.spec.whatwg.org/multipage/origin.html#requires-storing-the-policy-container-in-history

R=domenic@chromium.org

Bug: 1329190
Change-Id: I87241b0f65c8ab6f1c58df866490c09dca80c915
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3669514
Reviewed-by: Antonio Sartori <antoniosartori@chromium.org>
Reviewed-by: Domenic Denicola <domenic@chromium.org>
Commit-Queue: Dominic Farolino <dom@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1008222}