Standardize usage of virtual/override/final in extensions/

extensions/browser/event_router_unittest.cc

 // Copyright 2013 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/event_router.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 20 matching lines @@
   int listener_removed_count() const { return listener_removed_count_; }
   const std::string& last_event_name() const { return last_event_name_; }
 
   void Reset() {
     listener_added_count_ = 0;
     listener_removed_count_ = 0;
     last_event_name_.clear();
   }
 
   // EventRouter::Observer overrides:
-  virtual void OnListenerAdded(const EventListenerInfo& details) override {
+  void OnListenerAdded(const EventListenerInfo& details) override {
     listener_added_count_++;
     last_event_name_ = details.event_name;
   }
 
-  virtual void OnListenerRemoved(const EventListenerInfo& details) override {
+  void OnListenerRemoved(const EventListenerInfo& details) override {
     listener_removed_count_++;
     last_event_name_ = details.event_name;
   }
 
  private:
   int listener_added_count_;
   int listener_removed_count_;
   std::string last_event_name_;
 
   DISALLOW_COPY_AND_ASSIGN(MockEventRouterObserver);
@@ skipping 107 matching lines @@
   RunEventRouterObserverTest(
       base::Bind(&CreateEventListenerForExtension, "extension_id"));
 }
 
 TEST_F(EventRouterTest, EventRouterObserverForURLs) {
   RunEventRouterObserverTest(
       base::Bind(&CreateEventListenerForURL, GURL("http://google.com/path")));
 }
 
 }  // namespace extensions