Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/background/offliner_stub.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 COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_STUB_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_STUB_H_
-
-#include "components/offline_pages/background/offliner.h"
-
-namespace offline_pages {
-
-// Test class stubbing out the functionality of Offliner.
-// It is only used for test support.
-class OfflinerStub : public Offliner {
- public:
-  OfflinerStub();
-  ~OfflinerStub() override;
-
-  bool LoadAndSave(const SavePageRequest& request,
-                   const CompletionCallback& callback) override;
-
-  void Cancel() override;
-
-  void disable_loading() { disable_loading_ = true; }
-
-  void enable_callback(bool enable) { enable_callback_ = enable; }
-
-  bool cancel_called() { return cancel_called_; }
-
- private:
-  CompletionCallback callback_;
-  bool disable_loading_;
-  bool enable_callback_;
-  bool cancel_called_;
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_STUB_H_