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

components/offline_pages/offline_page_feature.h

-// Copyright 2015 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_OFFLINE_PAGE_FEATURE_H_
-#define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_FEATURE_H_
-
-#include "base/feature_list.h"
-#include "build/build_config.h"
-
-namespace offline_pages {
-
-extern const base::Feature kOfflineBookmarksFeature;
-extern const base::Feature kOffliningRecentPagesFeature;
-extern const base::Feature kOfflinePagesSvelteConcurrentLoadingFeature;
-extern const base::Feature kOfflinePagesCTFeature;
-extern const base::Feature kOfflinePagesSharingFeature;
-extern const base::Feature kBackgroundLoaderForDownloadsFeature;
-extern const base::Feature kOfflinePagesAsyncDownloadFeature;
-
-// Returns true if saving bookmarked pages for offline viewing is enabled.
-bool IsOfflineBookmarksEnabled();
-
-// Returns true if offlining of recent pages (aka 'Last N pages') is enabled.
-bool IsOffliningRecentPagesEnabled();
-
-// Returns true if offline CT features are enabled.  See crbug.com/620421.
-bool IsOfflinePagesCTEnabled();
-
-// Returns true if offline page sharing is enabled.
-bool IsOfflinePagesSharingEnabled();
-
-// Returns true if saving a foreground tab that is taking too long using the
-// background scheduler is enabled.
-bool IsBackgroundLoaderForDownloadsEnabled();
-
-// Returns true if concurrent background loading is enabled for svelte.
-bool IsOfflinePagesSvelteConcurrentLoadingEnabled();
-
-// Returns true if downloading a page asynchonously is enabled.
-bool IsOfflinePagesAsyncDownloadEnabled();
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_FEATURE_H_