Update FetchTaskTarget to propagate CSP violations. (#36409)

It also updates the FetchResponseListener to process CSP violations to
ensure that iframe elements (amongst others) properly generate the CSP
events. These iframe elements are used in the Trusted Types tests
themselves and weren't propagating the violations before.

However, the tests themselves are still not passing since they also use
Websockets, which currently aren't using the fetch machinery itself.
That is fixed as part of [1].

[1]: https://github.com/servo/servo/issues/35028

---------

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/components/script/dom/htmlvideoelement.rs b/components/script/dom/htmlvideoelement.rs
index 49f81f78d8d..a6f9103200b 100644
--- a/components/script/dom/htmlvideoelement.rs
+++ b/components/script/dom/htmlvideoelement.rs
@@ -5,6 +5,7 @@
 use std::cell::Cell;
 use std::sync::Arc;
 
+use content_security_policy as csp;
 use dom_struct::dom_struct;
 use euclid::default::Size2D;
 use html5ever::{LocalName, Prefix, local_name, namespace_url, ns};
@@ -416,6 +417,11 @@ impl FetchResponseListener for PosterFrameFetchContext {
     fn submit_resource_timing(&mut self) {
         network_listener::submit_timing(self, CanGc::note())
     }
+
+    fn process_csp_violations(&mut self, _request_id: RequestId, violations: Vec<csp::Violation>) {
+        let global = &self.resource_timing_global();
+        global.report_csp_violations(violations);
+    }
 }
 
 impl ResourceTimingListener for PosterFrameFetchContext {