Delete invalidateTreeIfNeeded.

sky/engine/core/rendering/RenderBox.h

Index: sky/engine/core/rendering/RenderBox.h
diff --git a/sky/engine/core/rendering/RenderBox.h b/sky/engine/core/rendering/RenderBox.h
index 6d3b25424f3782886171c1dc3cae14936d03afc1..8e07a8640f1daa6fdc24e0017bc241963608497b 100644
--- a/sky/engine/core/rendering/RenderBox.h
+++ b/sky/engine/core/rendering/RenderBox.h
@@ -438,7 +438,6 @@ public:
     virtual void paintObject(PaintInfo&, const LayoutPoint&) { ASSERT_NOT_REACHED(); }
     virtual void paintBoxDecorationBackground(PaintInfo&, const LayoutPoint&);
     virtual void paintMask(PaintInfo&, const LayoutPoint&);
-    virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) override;
 
     // Called when a positioned object moves but doesn't necessarily change size.  A simplified layout is attempted
     // that just updates the object's position. If the size does change, the object remains dirty.
@@ -536,9 +535,6 @@ protected:
 private:
     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;
 
     LayoutUnit containingBlockLogicalWidthForPositioned(const RenderBoxModelObject* containingBlock) const;