Standardize usage of virtual/override/final in extensions/

extensions/browser/api/web_request/web_request_api.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 "extensions/browser/api/web_request/web_request_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 2112 matching lines @@
 // when the cache is cleared (when page loads happen).
 class ClearCacheQuotaHeuristic : public extensions::QuotaLimitHeuristic {
  public:
   ClearCacheQuotaHeuristic(const Config& config, BucketMapper* map)
       : QuotaLimitHeuristic(
             config,
             map,
             "MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES"),
         callback_registered_(false),
         weak_ptr_factory_(this) {}
-  virtual ~ClearCacheQuotaHeuristic() {}
-  virtual bool Apply(Bucket* bucket,
-                     const base::TimeTicks& event_time) override;
+  ~ClearCacheQuotaHeuristic() override {}
+  bool Apply(Bucket* bucket, const base::TimeTicks& event_time) override;
 
  private:
   // Callback that is triggered by the ExtensionWebRequestEventRouter on a page
   // load.
   //
   // We don't need to take care of the life time of |bucket|: It is owned by the
   // BucketMapper of our base class in |QuotaLimitHeuristic::bucket_mapper_|. As
   // long as |this| exists, the respective BucketMapper and its bucket will
   // exist as well.
   void OnPageLoad(Bucket* bucket);
@@ skipping 307 matching lines @@
       base::Bind(&WarningService::NotifyWarningsOnUI, profile_id(), warnings));
 
   // Continue gracefully.
   RunSync();
 }
 
 bool WebRequestHandlerBehaviorChangedFunction::RunSync() {
   helpers::ClearCacheOnNavigation();
   return true;
 }