Add BorderBoxOutsets method to LayoutBoxModelObject

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 268 matching lines @@
   LayoutUnit BorderOver() const {
     return LayoutUnit(Style()->BorderOverWidth());
   }
   LayoutUnit BorderUnder() const {
     return LayoutUnit(Style()->BorderUnderWidth());
   }
 
   LayoutUnit BorderWidth() const { return BorderLeft() + BorderRight(); }
   LayoutUnit BorderHeight() const { return BorderTop() + BorderBottom(); }
 
+  virtual LayoutRectOutsets BorderBoxOutsets() const {
+    return LayoutRectOutsets(BorderTop(), BorderRight(), BorderBottom(),
+                             BorderLeft());
+  }
+
   // Insets from the border box to the inside of the border.
   LayoutRectOutsets BorderInsets() const {
     return LayoutRectOutsets(-BorderTop(), -BorderRight(), -BorderBottom(),
                              -BorderLeft());
   }
 
   bool HasBorderOrPadding() const {
     return Style()->HasBorder() || Style()->HasPadding();
   }
 
@@ skipping 247 matching lines @@
   }
 
   std::unique_ptr<LayoutBoxModelObjectRareData> rare_data_;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBoxModelObject, IsBoxModelObject());
 
 }  // namespace blink
 
 #endif  // LayoutBoxModelObject_h