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

chrome/browser/status_icons/status_icon_menu_model_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 "chrome/browser/status_icons/status_icon_menu_model.h"
 
 #include "base/compiler_specific.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/status_icons/status_icon.h"
@@ skipping 21 matching lines @@
 
   virtual int changed_count() {
     return changed_count_;
   }
 
   StatusIconMenuModel* menu_model() {
     return menu_.get();
   }
 
  private:
-  virtual void OnMenuStateChanged() override {
-    ++changed_count_;
-  }
+  void OnMenuStateChanged() override { ++changed_count_; }
 
   scoped_ptr<StatusIconMenuModel> menu_;
   int changed_count_;
 };
 
 TEST_F(StatusIconMenuModelTest, ToggleBooleanProperties) {
   menu_model()->AddItem(0, ASCIIToUTF16("foo"));
 
   menu_model()->SetCommandIdChecked(0, true);
   EXPECT_TRUE(menu_model()->IsCommandIdChecked(0));
@@ skipping 52 matching lines @@
 
   // Ensure changes to one menu item does not affect the other menu item.
   EXPECT_FALSE(menu_model()->GetAcceleratorForCommandId(1, &accel_arg));
   EXPECT_EQ(base::string16(), menu_model()->GetLabelForCommandId(1));
   EXPECT_EQ(base::string16(), menu_model()->GetSublabelForCommandId(0));
   EXPECT_FALSE(menu_model()->GetIconForCommandId(0, &image_arg));
 
   // Menu state should have changed 7 times in this test.
   EXPECT_EQ(7, changed_count());
 }