Standardize usage of virtual/override/final in chrome/browser/safe_browsing/

chrome/browser/safe_browsing/safe_browsing_database.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/safe_browsing/safe_browsing_database.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/bind.h"
@@ skipping 295 matching lines @@
   }
 
   return true;
 }
 
 }  // namespace
 
 // The default SafeBrowsingDatabaseFactory.
 class SafeBrowsingDatabaseFactoryImpl : public SafeBrowsingDatabaseFactory {
  public:
-  virtual SafeBrowsingDatabase* CreateSafeBrowsingDatabase(
+  SafeBrowsingDatabase* CreateSafeBrowsingDatabase(
       bool enable_download_protection,
       bool enable_client_side_whitelist,
       bool enable_download_whitelist,
       bool enable_extension_blacklist,
       bool enable_side_effect_free_whitelist,
       bool enable_ip_blacklist) override {
     return new SafeBrowsingDatabaseNew(
         new SafeBrowsingStoreFile,
         enable_download_protection ? new SafeBrowsingStoreFile : NULL,
         enable_client_side_whitelist ? new SafeBrowsingStoreFile : NULL,
@@ skipping 1240 matching lines @@
 bool SafeBrowsingDatabaseNew::IsMalwareIPMatchKillSwitchOn() {
   SBFullHash malware_kill_switch = SBFullHashForString(kMalwareIPKillSwitchUrl);
   std::vector<SBFullHash> full_hashes;
   full_hashes.push_back(malware_kill_switch);
   return ContainsWhitelistedHashes(csd_whitelist_, full_hashes);
 }
 
 bool SafeBrowsingDatabaseNew::IsCsdWhitelistKillSwitchOn() {
   return csd_whitelist_.second;
 }