[Offline Pages] Make new archives have random file names.

chrome/browser/android/offline_pages/offline_page_mhtml_archiver.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 CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_MHTML_ARCHIVER_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_MHTML_ARCHIVER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 24 matching lines @@
 //   void SavePageOffline(content::WebContents* web_contents) {
 //     const GURL& url = web_contents->GetLastCommittedURL();
 //     std::unique_ptr<OfflinePageMHTMLArchiver> archiver(
 //         new OfflinePageMHTMLArchiver(
 //             web_contents, archive_dir));
 //     // Callback is of type OfflinePageModel::SavePageCallback.
 //     model->SavePage(url, std::move(archiver), callback);
 //   }
 class OfflinePageMHTMLArchiver : public OfflinePageArchiver {
  public:
-  // Returns the extension name of the offline page file.
-  static std::string GetFileNameExtension();
-  // Creates a file name for the archive file based on url and title. Public for
-  // testing.
-  static base::FilePath GenerateFileName(const GURL& url,
-                                         const std::string& title,
-                                         int64_t archive_id);
 
   explicit OfflinePageMHTMLArchiver(content::WebContents* web_contents);
   ~OfflinePageMHTMLArchiver() override;
 
   // OfflinePageArchiver implementation:
   void CreateArchive(const base::FilePath& archives_dir,
                      int64_t archive_id,
                      const CreateArchiveCallback& callback) override;
 
  protected:
@@ skipping 26 matching lines @@
   CreateArchiveCallback callback_;
 
   base::WeakPtrFactory<OfflinePageMHTMLArchiver> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageMHTMLArchiver);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_MHTML_ARCHIVER_H_