1 files changed, 41 insertions, 0 deletions
diff --git a/dom/worklet/WorkletPrincipals.cpp b/dom/worklet/WorkletPrincipals.cpp
new file mode 100644
index 0000000000..f86ec11a9c
--- /dev/null
+++ b/dom/worklet/WorkletPrincipals.cpp
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WorkletPrincipals.h"
+
+#include "mozilla/dom/WorkletImpl.h"
+#include "nsJSPrincipals.h"
+
+namespace mozilla {
+namespace dom {
+
+WorkletPrincipals::WorkletPrincipals(WorkletImpl* aWorkletImpl)
+    : JSPrincipals(), mWorkletImpl(aWorkletImpl) {
+  setDebugToken(kJSPrincipalsDebugToken);
+}
+
+WorkletPrincipals::~WorkletPrincipals() = default;
+
+bool WorkletPrincipals::write(JSContext* aCx,
+                              JSStructuredCloneWriter* aWriter) {
+  // This is a serialization of the NullPrincipal corresponding to the worklet
+  // environment settings object for the WorkletGlobalScope.
+  // https://drafts.css-houdini.org/worklets/#set-up-a-worklet-environment-settings-object
+  return nsJSPrincipals::WritePrincipalInfo(aWriter,
+                                            mWorkletImpl->PrincipalInfo());
+}
+
+bool WorkletPrincipals::isSystemOrAddonPrincipal() {
+  // Per Bug 1578623 rev a83797ed249c - Worklets are always NullPrincipal
+  return false;
+}
+
+void WorkletPrincipals::Destroy(JSPrincipals* aPrincipals) {
+  delete static_cast<WorkletPrincipals*>(aPrincipals);
+}
+
+}  // namespace dom
+}  // namespace mozilla