Remove uses of PaintBehaviorFlattenCompositingLayers

sky/engine/core/rendering/RenderBoxModelObject.h

Index: sky/engine/core/rendering/RenderBoxModelObject.h
diff --git a/sky/engine/core/rendering/RenderBoxModelObject.h b/sky/engine/core/rendering/RenderBoxModelObject.h
index 6bfb980c54428896f549eb06d074f41f02aa4d7d..fe032876c1e51b33e3733bd1fc4366bff13d4eea 100644
--- a/sky/engine/core/rendering/RenderBoxModelObject.h
+++ b/sky/engine/core/rendering/RenderBoxModelObject.h
@@ -151,9 +151,9 @@ public:
     LayoutUnit containingBlockLogicalWidthForContent() const;
 
     void paintBorder(const PaintInfo&, const LayoutRect&, const RenderStyle*, BackgroundBleedAvoidance = BackgroundBleedNone, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
-    bool paintNinePieceImage(GraphicsContext*, const LayoutRect&, const RenderStyle*, const NinePieceImage&, CompositeOperator = CompositeSourceOver);
+    bool paintNinePieceImage(GraphicsContext*, const LayoutRect&, const RenderStyle*, const NinePieceImage&);
     void paintBoxShadow(const PaintInfo&, const LayoutRect&, const RenderStyle*, ShadowStyle, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
-    void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, InlineFlowBox* = 0, const LayoutSize& = LayoutSize(), CompositeOperator = CompositeSourceOver, RenderObject* backgroundObject = 0, bool skipBaseColor = false);
+    void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, InlineFlowBox* = 0, const LayoutSize& = LayoutSize(), RenderObject* backgroundObject = 0, bool skipBaseColor = false);
 
     virtual bool boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, InlineFlowBox* = 0) const;