Create offline_url_utils

ios/chrome/browser/reading_list/url_downloader.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 IOS_CHROME_BROWSER_READING_LIST_URL_DOWNLOADER_H_
 #define IOS_CHROME_BROWSER_READING_LIST_URL_DOWNLOADER_H_
 
 #include <queue>
 
 #include "base/callback.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "ios/chrome/browser/dom_distiller/distiller_viewer.h"
 
 class PrefService;
 class GURL;
 namespace base {
 class FilePath;
 }
 
 namespace dom_distiller {
 class DomDistillerService;
 }
 
-// This string contains the directory name in which offline pages are saved.
-// The directory is located in the profile directory.
-extern const char kReadingListOfflineDirectory[];
-
 // This class downloads and deletes offline versions of URLs using DOM distiller
 // to fetch the page and simplify it. Only one item is downloaded or deleted at
 // a time using a queue of tasks that are handled sequentially. Items (page +
 // images) are saved to individual folders within an offline folder, using md5
 // hashing to create unique file names. When a deletion is requested, all
 // previous downloads for that URL are cancelled as they would be deleted.
 class URLDownloader {
   friend class MockURLDownloader;
 
  public:
@@ skipping 46 matching lines @@
   // Handles the next task in the queue, if no task is currently being handled.
   void HandleNextTask();
   // Callback for completed (or failed) download, handles calling
   // downloadCompletion and starting the next task.
   void DownloadCompletionHandler(const GURL& url,
                                  const std::string& title,
                                  SuccessState success);
   // Callback for completed (or failed) deletion, handles calling
   // deleteCompletion and starting the next task.
   void DeleteCompletionHandler(const GURL& url, bool success);
-  // The absolute path of the directory where offline URLs are saved.
-  base::FilePath OfflineRootDirectoryPath();
 
-  // The absolute path of the directory where a specific URL is saved offline.
-  // Contains the page and supporting files (images).
-  base::FilePath OfflineURLDirectoryAbsolutePath(const GURL& url);
-  // The absolute path of the offline webpage for the URL. The file may not
-  // exist.
-  base::FilePath OfflinePageAbsolutePath(const GURL& url);
-  // The relative path to the distilled page. The result is relative to
-  // |OfflineRootDirectoryPath()|.
-  base::FilePath OfflinePagePath(const GURL& url);
   // Creates the offline directory for |url|. Returns true if successful or if
   // the directory already exists.
   bool CreateOfflineURLDirectory(const GURL& url);
-  // The name of the directory containing offline data for |url|.
-  std::string OfflineURLDirectoryID(const GURL& url);
-
   // Saves the |data| for image at |imageURL| to disk, for main URL |url|;
   // puts path of saved file in |path| and returns whether save was successful.
   bool SaveImage(const GURL& url,
                  const GURL& imageURL,
                  const std::string& data,
                  std::string* image_name);
   // Saves images in |images| array to disk and replaces references in |html| to
   // local path. Returns updated html.
   std::string SaveAndReplaceImagesInHTML(
       const GURL& url,
@@ skipping 25 matching lines @@
   std::deque<Task> tasks_;
   bool working_;
   base::FilePath base_directory_;
   std::unique_ptr<dom_distiller::DistillerViewerInterface> distiller_;
   base::CancelableTaskTracker task_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(URLDownloader);
 };
 
 #endif  // IOS_CHROME_BROWSER_READING_LIST_URL_DOWNLOADER_H_