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

chrome/browser/extensions/menu_manager_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 <vector>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 470 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(MockEventRouter);
 };
 
 // A mock ExtensionSystem to serve our MockEventRouter.
 class MockExtensionSystem : public TestExtensionSystem {
  public:
   explicit MockExtensionSystem(Profile* profile)
       : TestExtensionSystem(profile) {}
 
-  virtual EventRouter* event_router() override {
+  EventRouter* event_router() override {
     if (!mock_event_router_)
       mock_event_router_.reset(new MockEventRouter(profile_));
     return mock_event_router_.get();
   }
 
  private:
   scoped_ptr<MockEventRouter> mock_event_router_;
 
   DISALLOW_COPY_AND_ASSIGN(MockExtensionSystem);
 };
@@ skipping 261 matching lines @@
   EXPECT_EQ(4u, manager_.MenuItems(key1)->size());
   EXPECT_EQ(1u, manager_.MenuItems(key2)->size());
 
   // Remove all context menu items with incognito true.
   manager_.RemoveAllIncognitoContextItems();
   EXPECT_EQ(2u, manager_.MenuItems(key1)->size());
   EXPECT_EQ(1u, manager_.MenuItems(key2)->size());
 }
 
 }  // namespace extensions