Bug 1895254 - Prototype the Navigation API WebIDL. r=farre,dom-core,peterv

Differential Revision: https://phabricator.services.mozilla.com/D210088

dom/navigation/Navigation.cpp

@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 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 "mozilla/dom/Navigation.h"
+#include "mozilla/dom/NavigationBinding.h"
+
+#include "mozilla/StaticPrefs_dom.h"
+#include "nsIXULRuntime.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(Navigation, DOMEventTargetHelper);
+NS_IMPL_ADDREF_INHERITED(Navigation, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(Navigation, DOMEventTargetHelper)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Navigation)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+JSObject* Navigation::WrapObject(JSContext* aCx,
+                                 JS::Handle<JSObject*> aGivenProto) {
+  return Navigation_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+/* static */
+bool Navigation::IsAPIEnabled(JSContext* /* unused */, JSObject* /* unused */) {
+  return SessionHistoryInParent() &&
+         StaticPrefs::dom_navigation_webidl_enabled_DoNotUseDirectly();
+}
+
+}  // namespace mozilla::dom