Clip incremental invalidation rects for RenderBox

Source/core/rendering/RenderBox.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 645 matching lines @@
         const LayoutRect& oldBounds, const LayoutPoint& oldPositionFromPaintInvalidationContainer,
         const LayoutRect& newBounds, const LayoutPoint& newPositionFromPaintInvalidationContainer) OVERRIDE;
     virtual void incrementallyInvalidatePaint(const RenderLayerModelObject& paintInvalidationContainer, const LayoutRect& oldBounds, const LayoutRect& newBounds, const LayoutPoint& positionFromPaintInvalidationContainer) OVERRIDE;
 
     virtual void clearPaintInvalidationState(const PaintInvalidationState&) OVERRIDE;
 #if ENABLE(ASSERT)
     virtual bool paintInvalidationStateIsDirty() const OVERRIDE;
 #endif
 
 private:
+    void invalidatePaintRectClippedByOldAndNewBounds(const RenderLayerModelObject& paintInvalidationContainer, const LayoutRect&, const LayoutRect& oldBounds, const LayoutRect& newBounds);
+
     void updateShapeOutsideInfoAfterStyleChange(const RenderStyle&, const RenderStyle* oldStyle);
     void updateGridPositionAfterStyleChange(const RenderStyle*);
 
     bool autoWidthShouldFitContent() const;
     void shrinkToFitWidth(const LayoutUnit availableSpace, const LayoutUnit logicalLeftValue, const LayoutUnit bordersPlusPadding, LogicalExtentComputedValues&) const;
 
     // Returns true if we queued up a paint invalidation.
     bool paintInvalidationLayerRectsForImage(WrappedImagePtr, const FillLayer&, bool drawingBackground);
 
     bool skipContainingBlockForPercentHeightCalculation(const RenderBox* containingBlock) const;
@@ skipping 104 matching lines @@
         if (UNLIKELY(inlineBoxWrapper() != 0))
             deleteLineBoxWrapper();
     }
 
     ensureRareData().m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace blink
 
 #endif // RenderBox_h