Revert of Introduce the Blink NotificationService, move permission checks there

third_party/WebKit/Source/modules/notifications/NotificationManager.h

-// Copyright 2016 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.
-
-#ifndef NotificationManager_h
-#define NotificationManager_h
-
-#include "core/dom/ContextLifecycleObserver.h"
-#include "core/dom/ExecutionContext.h"
-#include "public/platform/modules/notifications/notification_service.mojom-blink.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-namespace mojom {
-namespace blink {
-enum class PermissionStatus;
-}
-}
-
-// The notification manager, unique to the execution context, is responsible for
-// connecting and communicating with the Mojo notification service.
-//
-// TODO(peter): Make the NotificationManager responsible for resource loading.
-class NotificationManager final
-    : public GarbageCollectedFinalized<NotificationManager>
-    , public ContextLifecycleObserver
-    , public Supplement<ExecutionContext> {
-    USING_GARBAGE_COLLECTED_MIXIN(NotificationManager);
-    WTF_MAKE_NONCOPYABLE(NotificationManager);
-public:
-    static NotificationManager* from(ExecutionContext*);
-    static const char* supplementName();
-
-    ~NotificationManager();
-
-    // Returns the notification permission status of the current origin. This
-    // method is synchronous to support the Notification.permission getter.
-    mojom::blink::PermissionStatus permissionStatus() const;
-
-    // ContextLifecycleObserver implementation.
-    void contextDestroyed() override;
-
-    DECLARE_VIRTUAL_TRACE();
-
-private:
-    explicit NotificationManager(ExecutionContext*);
-
-    mojom::blink::NotificationServicePtr m_service;
-};
-
-} // namespace blink
-
-#endif // NotificationManager_h