Standardize usage of virtual/override/final specifiers.

ui/views/controls/scrollbar/native_scroll_bar_views.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/controls/scrollbar/native_scroll_bar_views.h"
 
 #include "base/logging.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/path.h"
@@ skipping 12 matching lines @@
 class ScrollBarButton : public BaseScrollBarButton {
  public:
   enum Type {
     UP,
     DOWN,
     LEFT,
     RIGHT,
   };
 
   ScrollBarButton(ButtonListener* listener, Type type);
-  virtual ~ScrollBarButton();
+  ~ScrollBarButton() override;
 
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual const char* GetClassName() const override {
-    return "ScrollBarButton";
-  }
+  gfx::Size GetPreferredSize() const override;
+  const char* GetClassName() const override { return "ScrollBarButton"; }
 
  protected:
-  virtual void OnPaint(gfx::Canvas* canvas) override;
+  void OnPaint(gfx::Canvas* canvas) override;
 
  private:
   ui::NativeTheme::ExtraParams GetNativeThemeParams() const;
   ui::NativeTheme::Part GetNativeThemePart() const;
   ui::NativeTheme::State GetNativeThemeState() const;
 
   Type type_;
 };
 
 // Wrapper for the scroll thumb
 class ScrollBarThumb : public BaseScrollBarThumb {
  public:
   explicit ScrollBarThumb(BaseScrollBar* scroll_bar);
-  virtual ~ScrollBarThumb();
+  ~ScrollBarThumb() override;
 
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual const char* GetClassName() const override {
-    return "ScrollBarThumb";
-  }
+  gfx::Size GetPreferredSize() const override;
+  const char* GetClassName() const override { return "ScrollBarThumb"; }
 
  protected:
-  virtual void OnPaint(gfx::Canvas* canvas) override;
+  void OnPaint(gfx::Canvas* canvas) override;
 
  private:
   ui::NativeTheme::ExtraParams GetNativeThemeParams() const;
   ui::NativeTheme::Part GetNativeThemePart() const;
   ui::NativeTheme::State GetNativeThemeState() const;
 
   ScrollBar* scroll_bar_;
 };
 
 /////////////////////////////////////////////////////////////////////////////
@@ skipping 341 matching lines @@
   thumb_params.scrollbar_thumb.is_hovering = false;
   gfx::Size track_size = theme->GetPartSize(
       ui::NativeTheme::kScrollbarVerticalThumb,
       ui::NativeTheme::kNormal,
       thumb_params);
 
   return std::max(track_size.width(), button_size.width());
 }
 
 }  // namespace views