Adding unit tests for the SafeBrowsingBlockingPage class

chrome/browser/safe_browsing/safe_browsing_service.h

 // Copyright (c) 2006-2008 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_
 
@@ skipping 54 matching lines @@
     int render_process_host_id;
     int render_view_id;
   };
 
   // Creates the safe browsing service.  Need to initialize before using.
   SafeBrowsingService();
   ~SafeBrowsingService();
 
   // Initializes the service.  io_loop is the message loop that the
   // caller of this service (ResourceDispatcherHost) wants to be notified on
-  // for check results.  db_loop is the message loop for the thread to do
-  // the database work.
+  // for check results.
   void Initialize(MessageLoop* io_loop);
 
   // Called to initialize objects that are used on the io_thread.
   void OnIOInitialize(MessageLoop* notify_loop,
                       const std::string& client_key,
                       const std::string& wrapped_key);
 
   // Called to initialize objects that are used on the db_thread.
   void OnDBInitialize();
 
@@ skipping 213 matching lines @@
     Client* client;
     GURL url;
     base::Time start;
   } QueuedCheck;
   std::deque<QueuedCheck> queued_checks_;
 
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingService);
 };
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_