Convert to base::Callback in safe_browsing client-side-detection code.

chrome/browser/safe_browsing/client_side_detection_host.h

 // Copyright (c) 2011 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_SAFE_BROWSING_CLIENT_SIDE_DETECTION_HOST_H_
 #define CHROME_BROWSER_SAFE_BROWSING_CLIENT_SIDE_DETECTION_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 103 matching lines @@
   // variable.  This information will be passed on to the feature extractor.
   scoped_ptr<BrowseInfo> browse_info_;
   // Redirect chain that leads to the first page of the current host. We keep
   // track of this for browse_info_.
   std::vector<GURL> cur_host_redirects_;
   // Current host, used to help determine cur_host_redirects_.
   std::string cur_host_;
   // Handles registering notifications with the NotificationService.
   content::NotificationRegistrar registrar_;
 
-  base::ScopedCallbackFactory<ClientSideDetectionHost> cb_factory_;
+  base::WeakPtrFactory<ClientSideDetectionHost> weak_factory_;
 
   // Unique page ID of the most recent unsafe site that was loaded in this tab
   // as well as the UnsafeResource.
   int unsafe_unique_page_id_;
   scoped_ptr<SafeBrowsingService::UnsafeResource> unsafe_resource_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSideDetectionHost);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_CLIENT_SIDE_DETECTION_HOST_H_