Validate hash_sha256 checksum on .crx update.

chrome/browser/chromeos/extensions/external_cache.h

 // Copyright (c) 2013 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_CHROMEOS_EXTENSIONS_EXTERNAL_CACHE_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTERNAL_CACHE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 73 matching lines @@
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // Implementation of ExtensionDownloaderDelegate:
   void OnExtensionDownloadFailed(const std::string& id,
                                  Error error,
                                  const PingResult& ping_result,
                                  const std::set<int>& request_ids) override;
 
-  void OnExtensionDownloadFinished(const std::string& id,
-                                   const base::FilePath& path,
+  void OnExtensionDownloadFinished(const extensions::CRXFileInfo& file,
                                    bool file_ownership_passed,
                                    const GURL& download_url,
                                    const std::string& version,
                                    const PingResult& ping_result,
                                    const std::set<int>& request_ids) override;
 
   bool IsExtensionPending(const std::string& id) override;
 
   bool GetExtensionExistingVersion(const std::string& id,
                                    std::string* version) override;
@@ skipping 81 matching lines @@
 
   // Weak factory for callbacks.
   base::WeakPtrFactory<ExternalCache> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalCache);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTERNAL_CACHE_H_