Standardize usage of virtual/override/final specifiers.

ui/views/widget/widget.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 "ui/views/widget/widget.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 53 matching lines @@
 }
 
 }  // namespace
 
 // A default implementation of WidgetDelegate, used by Widget when no
 // WidgetDelegate is supplied.
 class DefaultWidgetDelegate : public WidgetDelegate {
  public:
   explicit DefaultWidgetDelegate(Widget* widget) : widget_(widget) {
   }
-  virtual ~DefaultWidgetDelegate() {}
+  ~DefaultWidgetDelegate() override {}
 
   // Overridden from WidgetDelegate:
-  virtual void DeleteDelegate() override {
-    delete this;
-  }
-  virtual Widget* GetWidget() override {
-    return widget_;
-  }
-  virtual const Widget* GetWidget() const override {
-    return widget_;
-  }
-  virtual bool ShouldAdvanceFocusToTopLevelWidget() const override {
+  void DeleteDelegate() override { delete this; }
+  Widget* GetWidget() override { return widget_; }
+  const Widget* GetWidget() const override { return widget_; }
+  bool ShouldAdvanceFocusToTopLevelWidget() const override {
     // In most situations where a Widget is used without a delegate the Widget
     // is used as a container, so that we want focus to advance to the top-level
     // widget. A good example of this is the find bar.
     return true;
   }
 
  private:
   Widget* widget_;
 
   DISALLOW_COPY_AND_ASSIGN(DefaultWidgetDelegate);
@@ skipping 1413 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // internal::NativeWidgetPrivate, NativeWidget implementation:
 
 internal::NativeWidgetPrivate* NativeWidgetPrivate::AsNativeWidgetPrivate() {
   return this;
 }
 
 }  // namespace internal
 }  // namespace views