Standardize usage of virtual/override/final in ui/

ui/base/ime/dummy_input_method_delegate.h

 // 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.
 
 #ifndef UI_BASE_IME_DUMMY_INPUT_METHOD_DELEGATE_H_
 #define UI_BASE_IME_DUMMY_INPUT_METHOD_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/base/ime/input_method_delegate.h"
 
 namespace ui {
 namespace internal {
 
 class UI_BASE_EXPORT DummyInputMethodDelegate : public InputMethodDelegate {
  public:
   DummyInputMethodDelegate();
-  virtual ~DummyInputMethodDelegate();
+  ~DummyInputMethodDelegate() override;
 
   // Overridden from InputMethodDelegate:
-  virtual bool DispatchKeyEventPostIME(const ui::KeyEvent& key_event) override;
+  bool DispatchKeyEventPostIME(const ui::KeyEvent& key_event) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DummyInputMethodDelegate);
 };
 
 }  // namespace internal
 }  // namespace ui
 
 #endif  // UI_BASE_IME_DUMMY_INPUT_METHOD_DELEGATE_H_