Measure how often downloaded executables match the download whitelist.

chrome/browser/safe_browsing/download_protection_service.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.
 //
 // Helper class which handles communication with the SafeBrowsing servers for
 // improved binary download protection.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_DOWNLOAD_PROTECTION_SERVICE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_DOWNLOAD_PROTECTION_SERVICE_H_
 #pragma once
@@ skipping 79 matching lines @@
   // This is used to keep some stats around.
   enum DownloadCheckResultReason {
     REASON_INVALID_URL,
     REASON_SB_DISABLED,
     REASON_WHITELISTED_URL,
     REASON_WHITELISTED_REFERRER,
     REASON_INVALID_REQUEST_PROTO,
     REASON_SERVER_PING_FAILED,
     REASON_INVALID_RESPONSE_PROTO,
     REASON_NOT_BINARY_FILE,
+    REASON_REQUEST_CANCELED,
     REASON_MAX  // Always add new values before this one.
   };
 
  private:
   class CheckClientDownloadRequest;  // Per-request state
   friend class DownloadProtectionServiceTest;
   FRIEND_TEST_ALL_PREFIXES(DownloadProtectionServiceTest,
                            CheckClientDownloadValidateRequest);
   FRIEND_TEST_ALL_PREFIXES(DownloadProtectionServiceTest,
                            CheckClientDownloadSuccess);
@@ skipping 26 matching lines @@
   std::set<scoped_refptr<CheckClientDownloadRequest> > download_requests_;
 
   // Keeps track of the state of the service.
   bool enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadProtectionService);
 };
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_DOWNLOAD_PROTECTION_SERVICE_H_