Remove content::NotificationPermissionDispatcher.

third_party/WebKit/Source/modules/notifications/NotificationPermissionClient.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 "modules/notifications/NotificationPermissionClient.h"
-
-#include "core/dom/Document.h"
-#include "core/dom/ExecutionContext.h"
-#include "core/frame/LocalFrame.h"
-
-namespace blink {
-
-const char* NotificationPermissionClient::supplementName()
-{
-    return "NotificationPermissionClient";
-}
-
-NotificationPermissionClient* NotificationPermissionClient::from(ExecutionContext* context)
-{
-    if (!context->isDocument())
-        return nullptr;
-
-    const Document* document = toDocument(context);
-    if (!document->frame())
-        return nullptr;
-
-    return static_cast<NotificationPermissionClient*>(Supplement<LocalFrame>::from(document->frame(), supplementName()));
-}
-
-void provideNotificationPermissionClientTo(LocalFrame& frame, NotificationPermissionClient* client)
-{
-    frame.provideSupplement(NotificationPermissionClient::supplementName(), client);
-}
-
-} // namespace blink