diff -r 000000000000 -r 6474c204b198 dom/workers/Navigator.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/workers/Navigator.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,83 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* 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 "Navigator.h"
+
+#include "mozilla/dom/WorkerNavigatorBinding.h"
+
+#include "RuntimeService.h"
+#include "WorkerPrivate.h"
+
+BEGIN_WORKERS_NAMESPACE
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WorkerNavigator)
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WorkerNavigator, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WorkerNavigator, Release)
+
+/* static */ already_AddRefed<WorkerNavigator>
+WorkerNavigator::Create(bool aOnLine)
+{
+  RuntimeService* rts = RuntimeService::GetService();
+  MOZ_ASSERT(rts);
+
+  const RuntimeService::NavigatorProperties& properties =
+    rts->GetNavigatorProperties();
+
+  nsRefPtr<WorkerNavigator> navigator =
+    new WorkerNavigator(properties, aOnLine);
+
+  return navigator.forget();
+}
+
+JSObject*
+WorkerNavigator::WrapObject(JSContext* aCx)
+{
+  return WorkerNavigatorBinding_workers::Wrap(aCx, this);
+}
+
+void
+WorkerNavigator::GetAppName(nsString& aAppName) const
+{
+  WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+  MOZ_ASSERT(workerPrivate);
+
+  if (!mProperties.mAppNameOverridden.IsEmpty() &&
+      !workerPrivate->UsesSystemPrincipal()) {
+    aAppName = mProperties.mAppNameOverridden;
+  } else {
+    aAppName = mProperties.mAppName;
+  }
+}
+
+void
+WorkerNavigator::GetAppVersion(nsString& aAppVersion) const
+{
+  WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+  MOZ_ASSERT(workerPrivate);
+
+  if (!mProperties.mAppVersionOverridden.IsEmpty() &&
+      !workerPrivate->UsesSystemPrincipal()) {
+    aAppVersion = mProperties.mAppVersionOverridden;
+  } else {
+    aAppVersion = mProperties.mAppVersion;
+  }
+}
+
+void
+WorkerNavigator::GetPlatform(nsString& aPlatform) const
+{
+  WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+  MOZ_ASSERT(workerPrivate);
+
+  if (!mProperties.mPlatformOverridden.IsEmpty() &&
+      !workerPrivate->UsesSystemPrincipal()) {
+    aPlatform = mProperties.mPlatformOverridden;
+  } else {
+    aPlatform = mProperties.mPlatform;
+  }
+}
+
+END_WORKERS_NAMESPACE