Push API: move PushManager from Navigator to ServiceWorkerRegistration [switchover 6/6]

Source/modules/push_messaging/NavigatorPushManager.cpp

-// Copyright 2014 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/push_messaging/NavigatorPushManager.h"
-
-#include "core/frame/Navigator.h"
-#include "modules/push_messaging/PushManager.h"
-
-namespace blink {
-
-NavigatorPushManager::NavigatorPushManager()
-{
-}
-
-NavigatorPushManager::~NavigatorPushManager()
-{
-}
-
-const char* NavigatorPushManager::supplementName()
-{
-    return "NavigatorPushManager";
-}
-
-NavigatorPushManager& NavigatorPushManager::from(Navigator& navigator)
-{
-    NavigatorPushManager* supplement = static_cast<NavigatorPushManager*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
-    if (!supplement) {
-        supplement = new NavigatorPushManager();
-        provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
-    }
-    return *supplement;
-}
-
-PushManager* NavigatorPushManager::push(Navigator& navigator)
-{
-    return NavigatorPushManager::from(navigator).pushManager();
-}
-
-PushManager* NavigatorPushManager::pushManager()
-{
-    if (!m_pushManager)
-        m_pushManager = PushManager::create();
-    return m_pushManager.get();
-}
-
-void NavigatorPushManager::trace(Visitor* visitor)
-{
-    visitor->trace(m_pushManager);
-    WillBeHeapSupplement<Navigator>::trace(visitor);
-}
-
-} // namespace blink