Add support to sha256 hash the downloaded file....

chrome/browser/safe_browsing/safe_browsing_service.h

 // Copyright (c) 2010 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.
 //
 // The Safe Browsing service is responsible for downloading anti-phishing and
 // anti-malware tables and checking urls against them.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_
 #pragma once
@@ skipping 99 matching lines @@
 
   // Makes the passed |factory| the factory used to instanciate
   // a SafeBrowsingService. Useful for tests.
   static void RegisterFactory(SafeBrowsingServiceFactory* factory) {
     factory_ = factory;
   }
 
   // Create an instance of the safe browsing service.
   static SafeBrowsingService* CreateSafeBrowsingService();
 
+  // Called on UI thread to decide if safe browsing related stats
+  // could be reported.
+  bool CanReportStats() const;
+
   // Called on the UI thread to initialize the service.
   void Initialize();
 
   // Called on the main thread to let us know that the io_thread is going away.
   void ShutDown();
 
   // Returns true if the url's scheme can be checked.
   bool CanCheckUrl(const GURL& url) const;
 
+  // Called on UI thread to decide if the download file's sha256 hash
+  // should be calculated for safebrowsing.
+  bool DownloadBinHashNeeded() const;
+
   // Called on the IO thread to check if the given url is safe or not.  If we
   // can synchronously determine that the url is safe, CheckUrl returns true.
   // Otherwise it returns false, and "client" is called asynchronously with the
   // result when it is ready.
   virtual bool CheckBrowseUrl(const GURL& url, Client* client);
 
   // Check if the prefix for |url| is in safebrowsing download add lists.
   // Result will be passed to callback in |client|.
   bool CheckDownloadUrl(const GURL& url, Client* client);
 
@@ skipping 248 matching lines @@
 class SafeBrowsingServiceFactory {
  public:
   SafeBrowsingServiceFactory() { }
   virtual ~SafeBrowsingServiceFactory() { }
   virtual SafeBrowsingService* CreateSafeBrowsingService() = 0;
  private:
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingServiceFactory);
 };
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_