Start implementing new navigator.connect API

Source/modules/navigatorconnect/NavigatorServices.cpp

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "modules/navigatorconnect/NavigatorServices.h"
+
+#include "core/frame/Navigator.h"
+#include "modules/navigatorconnect/ServicePortCollection.h"
+
+namespace blink {
+
+NavigatorServices::~NavigatorServices()
+{
+}
+
+NavigatorServices& NavigatorServices::from(Navigator& navigator)
+{
+    NavigatorServices* supplement = static_cast<NavigatorServices*>(HeapSupplement<Navigator>::from(navigator, supplementName()));
+    if (!supplement) {
+        supplement = new NavigatorServices();
+        provideTo(navigator, supplementName(), supplement);
+    }
+    return *supplement;
+}
+
+ServicePortCollection* NavigatorServices::services(ExecutionContext* context, Navigator& navigator)
+{
+    return NavigatorServices::from(navigator).services(context);
+}
+
+ServicePortCollection* NavigatorServices::services(ExecutionContext* context)
+{
+    if (!m_services)
+        m_services = ServicePortCollection::create(context);
+    return m_services.get();
+}
+
+DEFINE_TRACE(NavigatorServices)
+{
+    visitor->trace(m_services);
+    HeapSupplement<Navigator>::trace(visitor);
+}
+
+NavigatorServices::NavigatorServices()
+{
+}
+
+const char* NavigatorServices::supplementName()
+{
+    return "NavigatorServices";
+}
+
+} // namespace blink