Standardize usage of virtual/override/final specifiers.

ui/views/test/views_test_helper_aura.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.
 
 #ifndef UI_VIEWS_TEST_VIEWS_TEST_HELPER_AURA_H_
 #define UI_VIEWS_TEST_VIEWS_TEST_HELPER_AURA_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 12 matching lines @@
 namespace wm {
 class WMState;
 }
 
 namespace views {
 
 class ViewsTestHelperAura : public ViewsTestHelper {
  public:
   ViewsTestHelperAura(base::MessageLoopForUI* message_loop,
                       ui::ContextFactory* context_factory);
-  virtual ~ViewsTestHelperAura();
+  ~ViewsTestHelperAura() override;
 
   // Overridden from ViewsTestHelper:
-  virtual void SetUp() override;
-  virtual void TearDown() override;
-  virtual gfx::NativeWindow GetContext() override;
+  void SetUp() override;
+  void TearDown() override;
+  gfx::NativeWindow GetContext() override;
 
  private:
   ui::ContextFactory* context_factory_;
   scoped_ptr<aura::test::AuraTestHelper> aura_test_helper_;
   scoped_ptr<wm::WMState> wm_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewsTestHelperAura);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_VIEWS_TEST_HELPER_AURA_H_