Optimize outline paint invalidation

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple 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 462 matching lines @@
   // right-to-left (e.g. direction:rtl) or or bottom-to-top (e.g. direction:rtl
   // writing-mode:vertical-rl).
   virtual bool hasTopOverflow() const;
   virtual bool hasLeftOverflow() const;
 
   void addLayoutOverflow(const LayoutRect&);
   void addSelfVisualOverflow(const LayoutRect&);
   void addContentsVisualOverflow(const LayoutRect&);
 
   void addVisualEffectOverflow();
-  LayoutRectOutsets computeVisualEffectOverflowOutsets() const;
+  LayoutRectOutsets computeVisualEffectOverflowOutsets();
   void addOverflowFromChild(LayoutBox* child) {
     addOverflowFromChild(child, child->locationOffset());
   }
   void addOverflowFromChild(LayoutBox* child, const LayoutSize& delta);
   void clearLayoutOverflow();
   void clearAllOverflows() { m_overflow.reset(); }
 
   void updateLayerTransformAfterLayout();
 
   DISABLE_CFI_PERF LayoutUnit contentWidth() const {
@@ skipping 1138 matching lines @@
 
 inline bool LayoutBox::isForcedFragmentainerBreakValue(EBreak breakValue) {
   return breakValue == BreakColumn || breakValue == BreakLeft ||
          breakValue == BreakPage || breakValue == BreakRecto ||
          breakValue == BreakRight || breakValue == BreakVerso;
 }
 
 }  // namespace blink
 
 #endif  // LayoutBox_h