Validate hash_sha256 checksum on .crx update.

extensions/browser/updater/update_service.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_UPDATER_UPDATE_SERVICE_H_
 #define EXTENSIONS_BROWSER_UPDATER_UPDATE_SERVICE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 30 matching lines @@
   friend class UpdateServiceTest;
 
   explicit UpdateService(content::BrowserContext* context);
   ~UpdateService() override;
 
   // ExtensionDownloaderDelegate:
   void OnExtensionDownloadFailed(const std::string& id,
                                  Error error,
                                  const PingResult& ping,
                                  const std::set<int>& request_ids) override;
-  void OnExtensionDownloadFinished(const std::string& id,
-                                   const base::FilePath& path,
+  void OnExtensionDownloadFinished(const CRXFileInfo& file,
                                    bool file_ownership_passed,
                                    const GURL& download_url,
                                    const std::string& version,
                                    const PingResult& ping,
                                    const std::set<int>& request_id) override;
   bool IsExtensionPending(const std::string& id) override;
   bool GetExtensionExistingVersion(const std::string& id,
                                    std::string* version) override;
 
   content::BrowserContext* browser_context_;
   scoped_ptr<ExtensionDownloader> downloader_;
   base::Callback<void(bool)> download_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(UpdateService);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_UPDATER_UPDATE_SERVICE_H_