Collect some histograms about signed binary downloads.

chrome/browser/download/chrome_download_manager_delegate.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_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
 #define CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/task.h"
+#include "chrome/browser/safe_browsing/download_protection_service.h"
 #include "content/browser/download/download_manager_delegate.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 
 class CrxInstaller;
 class DownloadHistory;
 class DownloadItem;
 class DownloadManager;
 class DownloadPrefs;
 class Profile;
@@ skipping 103 matching lines @@
                        const DownloadStateInfo& state,
                        bool visited_referrer_before);
 
   // Callback from history system.
   void OnItemAddedToPersistentStore(int32 download_id, int64 db_handle);
 
   // Callback function after download file hash is checked with safebrowsing
   // service.
   void CheckDownloadHashDone(int32 download_id, bool is_dangerous_hash);
 
+  // Callback function after the DownloadProtectionService completes.
+  void CheckClientDownloadDone(
+      DownloadItem* item,
+      safe_browsing::DownloadProtectionService::DownloadCheckResult result);
+
   Profile* profile_;
   scoped_ptr<DownloadPrefs> download_prefs_;
   scoped_ptr<DownloadHistory> download_history_;
 
   // Maps from pending extension installations to DownloadItem IDs.
   typedef base::hash_map<CrxInstaller*, int> CrxInstallerMap;
   CrxInstallerMap crx_installers_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeDownloadManagerDelegate);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_