Merge back LayoutLayerModelObject into RenderBoxModelObject

Source/core/layout/svg/LayoutSVGRoot.h

Index: Source/core/layout/svg/LayoutSVGRoot.h
diff --git a/Source/core/layout/svg/LayoutSVGRoot.h b/Source/core/layout/svg/LayoutSVGRoot.h
index 7afb884c28485f46a318b633d1efc50f7641b992..430a507ff6d575ac7f13ce21eb61fbd51a01202c 100644
--- a/Source/core/layout/svg/LayoutSVGRoot.h
+++ b/Source/core/layout/svg/LayoutSVGRoot.h
@@ -38,7 +38,7 @@ public:
     bool isEmbeddedThroughFrameContainingSVGDocument() const;
 
     virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const override;
-    virtual void mapRectToPaintInvalidationBacking(const LayoutLayerModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const override;
+    virtual void mapRectToPaintInvalidationBacking(const LayoutBoxModelObject* paintInvalidationContainer, LayoutRect&, const PaintInvalidationState*) const override;
 
     // If you have a LayoutSVGRoot, use firstChild or lastChild instead.
     void slowFirstChild() const = delete;
@@ -100,10 +100,10 @@ private:
 
     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
 
-    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const override;
+    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const override;
 
-    virtual void mapLocalToContainer(const LayoutLayerModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0, const PaintInvalidationState* = 0) const override;
-    virtual const LayoutObject* pushMappingToContainer(const LayoutLayerModelObject* ancestorToStopAt, LayoutGeometryMap&) const override;
+    virtual void mapLocalToContainer(const LayoutBoxModelObject* paintInvalidationContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0, const PaintInvalidationState* = 0) const override;
+    virtual const LayoutObject* pushMappingToContainer(const LayoutBoxModelObject* ancestorToStopAt, LayoutGeometryMap&) const override;
 
     virtual bool canBeSelectionLeaf() const override { return false; }
     virtual bool canHaveChildren() const override { return true; }