Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/webui/signin/login_ui_service_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 "chrome/browser/ui/webui/signin/login_ui_service.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 28 matching lines @@
 
   int ui_shown_count_;
   int ui_closed_count_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
 class LoginUIServiceTest : public testing::Test {
  public:
   LoginUIServiceTest() : service_(NULL) { }
-  virtual ~LoginUIServiceTest() { }
+  ~LoginUIServiceTest() override {}
 
  protected:
   LoginUIService service_;
   TestObserver observer_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginUIServiceTest);
 };
 
 // Test that the observer is called back when login UI is shown
 // or closed.
 TEST_F(LoginUIServiceTest, LoginUIServiceObserver) {
   service_.AddObserver(&observer_);
   EXPECT_EQ(NULL, service_.current_login_ui());
   TestLoginUI ui;
   service_.SetLoginUI(&ui);
   EXPECT_EQ(1, observer_.ui_shown_count());
 
   // If a different UI is closed than the one that was shown, no
   // notification should be fired.
   TestLoginUI other_ui;
   service_.LoginUIClosed(&other_ui);
   EXPECT_EQ(1, observer_.ui_shown_count());
 
   // If the right UI is closed, notification should be fired.
   service_.LoginUIClosed(&ui);
   EXPECT_EQ(1, observer_.ui_closed_count());
   service_.RemoveObserver(&observer_);
 }