Standardize usage of virtual/override/final specifiers.

ui/views/controls/native/native_view_host_test_base.h

 // Copyright 2014 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 "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/views/test/views_test_base.h"
 
 namespace views {
 
 class NativeViewHost;
 class NativeViewHostWrapper;
 class Widget;
 
 namespace test {
 
 // Base class for NativeViewHost tests on different platforms.
 class NativeViewHostTestBase : public ViewsTestBase {
  public:
   NativeViewHostTestBase();
-  virtual ~NativeViewHostTestBase();
+  ~NativeViewHostTestBase() override;
 
   // Create the |toplevel_| widget.
   void CreateTopLevel();
 
   // Create a testing |host_| that tracks destructor calls.
   void CreateTestingHost();
 
   // The number of times a host created by CreateHost() has been destroyed.
   int host_destroyed_count() { return host_destroyed_count_; }
   void ResetHostDestroyedCount() { host_destroyed_count_ = 0; }
@@ skipping 21 matching lines @@
 
   scoped_ptr<Widget> toplevel_;
   scoped_ptr<NativeViewHost> host_;
   int host_destroyed_count_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewHostTestBase);
 };
 
 }  // namespace test
 }  // namespace views