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

chrome/browser/extensions/api/declarative_webrequest/webrequest_rules_registry_unittest.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/declarative_webrequest/webrequest_rules_registry.h"
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 52 matching lines @@
   // to be cleared.
   int num_clear_cache_calls() const { return num_clear_cache_calls_; }
 
   // How many rules are there which have some conditions not triggered by URL
   // matches.
   size_t RulesWithoutTriggers() const {
     return rules_with_untriggered_conditions_for_test().size();
   }
 
  protected:
-  virtual ~TestWebRequestRulesRegistry() {}
+  ~TestWebRequestRulesRegistry() override {}
 
-  virtual void ClearCacheOnNavigation() override {
-    ++num_clear_cache_calls_;
-  }
+  void ClearCacheOnNavigation() override { ++num_clear_cache_calls_; }
 
  private:
   int num_clear_cache_calls_;
 };
 
 class WebRequestRulesRegistryTest : public testing::Test {
  public:
   WebRequestRulesRegistryTest()
       : ui_(content::BrowserThread::UI, &message_loop_),
         io_(content::BrowserThread::IO, &message_loop_) {}
@@ skipping 725 matching lines @@
   // This is a correct match.
   GURL url2("http://foo.com/index.html");
   scoped_ptr<net::URLRequest> request2(context.CreateRequest(
       url2, net::DEFAULT_PRIORITY, NULL, NULL));
   WebRequestData request_data2(request2.get(), ON_BEFORE_REQUEST);
   deltas = registry->CreateDeltas(NULL, request_data2, false);
   EXPECT_EQ(1u, deltas.size());
 }
 
 }  // namespace extensions