Remove PushPermissionClient.

Source/modules/push_messaging/PushPermissionRequestCallback.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/PushPermissionRequestCallback.h"
-
-#include "bindings/core/v8/ScriptPromiseResolver.h"
-#include "modules/push_messaging/PushManager.h"
-
-namespace blink {
-
-PushPermissionRequestCallback::PushPermissionRequestCallback(PushManager* manager, WebPushClient* client, PassRefPtr<ScriptPromiseResolver> resolver, WebServiceWorkerProvider* serviceWorkerProvider)
-    : m_manager(manager)
-    , m_client(client)
-    , m_resolver(resolver)
-    , m_serviceWorkerProvider(serviceWorkerProvider)
-{
-}
-
-PushPermissionRequestCallback::~PushPermissionRequestCallback()
-{
-}
-
-void PushPermissionRequestCallback::run()
-{
-    m_manager->doRegister(m_client, m_resolver, m_serviceWorkerProvider);
-}
-
-} // namespace blink