Enter realms more consistently during the script event loop.

1 files changed, 3 insertions, 0 deletions

diff --git a/components/script/dom/servoparser/mod.rs b/components/script/dom/servoparser/mod.rs
index 9967da64556..6b5df0e9768 100644
--- a/components/script/dom/servoparser/mod.rs
+++ b/components/script/dom/servoparser/mod.rs
@@ -34,6 +34,7 @@ use crate::dom::processinginstruction::ProcessingInstruction;
 use crate::dom::text::Text;
 use crate::dom::virtualmethods::vtable_for;
 use crate::network_listener::PreInvoke;
+use crate::realms::enter_realm;
 use crate::script_thread::ScriptThread;
 use content_security_policy::{self as csp, CspList};
 use dom_struct::dom_struct;
@@ -828,6 +829,8 @@ impl FetchResponseListener for ParserContext {
             return;
         }
 
+        let _realm = enter_realm(&*parser.document);
+
         parser.document.set_csp_list(csp_list);
         self.parser = Some(Trusted::new(&*parser));
         self.submit_resource_timing();