First step of PaintInvalidator implementation

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003-2013 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ skipping 325 matching lines @@
     bool updateLogicalWidthAndColumnWidth() override;
 
     void setLogicalLeftForChild(LayoutBox& child, LayoutUnit logicalLeft);
     void setLogicalTopForChild(LayoutBox& child, LayoutUnit logicalTop);
     void determineLogicalLeftPositionForChild(LayoutBox& child);
 
     void addOutlineRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, IncludeBlockVisualOverflowOrNot) const override;
 
     bool paintedOutputOfObjectHasNoEffect() const override;
     PaintInvalidationReason invalidatePaintIfNeeded(const PaintInvalidationState&) override;
+    PaintInvalidationReason invalidatePaintIfNeeded(const PaintInvalidatorContext&) const override;
 
     Node* nodeForHitTest() const final;
     bool hitTestChildren(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
 
     LayoutSize accumulateInFlowPositionOffsets() const override;
 
 private:
     bool layoutBlockFlow(bool relayoutChildren, LayoutUnit& pageLogicalHeight, SubtreeLayoutScope&);
     void layoutBlockChildren(bool relayoutChildren, SubtreeLayoutScope&, LayoutUnit beforeEdge, LayoutUnit afterEdge);
 
@@ skipping 304 matching lines @@
 
 // END METHODS DEFINED IN LayoutBlockFlowLine
 
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlockFlow, isLayoutBlockFlow());
 
 } // namespace blink
 
 #endif // LayoutBlockFlow_h