LibWeb: Implement performance.mark and performance.clearMarks

Author: https://github.com/Lubrsi
Commit: cbe0901706
Pull-request: https://github.com/SerenityOS/serenity/pull/18013
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibWeb/HTML/Window.cpp

@@ -747,6 +747,7 @@ WebIDL::ExceptionOr<void> Window::initialize_web_interfaces(Badge<WindowEnvironm
     Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::WindowPrototype>(realm, "Window"));
 
     MUST_OR_THROW_OOM(Bindings::WindowGlobalMixin::initialize(realm, *this));
+    MUST_OR_THROW_OOM(WindowOrWorkerGlobalScopeMixin::initialize(realm));
 
     return {};
 }