Use OneShotTimer in AddToHomescreenDataFetcher

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.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_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_
 #define CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/task/cancelable_task_tracker.h"
@@ skipping 115 matching lines @@
   scoped_refptr<base::TaskRunner> background_task_runner_;
 
   Observer* weak_observer_;
 
   // The icons must only be set on the UI thread for thread safety.
   SkBitmap badge_icon_;
   SkBitmap primary_icon_;
   ShortcutInfo shortcut_info_;
 
   base::CancelableTaskTracker favicon_task_tracker_;
-  base::Timer data_timeout_timer_;
+  base::OneShotTimer data_timeout_timer_;
 
   const int ideal_icon_size_in_px_;
   const int minimum_icon_size_in_px_;
   const int ideal_splash_image_size_in_px_;
   const int minimum_splash_image_size_in_px_;
   const int badge_size_in_px_;
 
   // Indicates whether to check WebAPK compatibility.
   bool check_webapk_compatibility_;
   bool is_waiting_for_web_application_info_;
   bool is_installable_check_complete_;
   bool is_icon_saved_;
   bool is_ready_;
 
   DISALLOW_COPY_AND_ASSIGN(AddToHomescreenDataFetcher);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DATA_FETCHER_H_