Remove painting roots.

sky/engine/core/rendering/RenderLayer.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 135 matching lines @@
     bool hasAncestorWithFilterOutsets() const;
 
     void convertToLayerCoords(const RenderLayer* ancestorLayer, LayoutPoint&) const;
     void convertToLayerCoords(const RenderLayer* ancestorLayer, LayoutRect&) const;
 
     // The two main functions that use the layer system.  The paint method
     // paints the layers that intersect the damage rect from back to
     // front.  The hitTest method looks for mouse events by walking
     // layers that intersect the point from front to back.
     // paint() assumes that the caller will clip to the bounds of damageRect if necessary.
-    void paint(GraphicsContext*, const LayoutRect& damageRect, RenderObject* paintingRoot = 0);
+    void paint(GraphicsContext*, const LayoutRect& damageRect);
     bool hitTest(const HitTestRequest&, HitTestResult&);
     bool hitTest(const HitTestRequest&, const HitTestLocation&, HitTestResult&);
 
     // Pass offsetFromRoot if known.
     bool intersectsDamageRect(const LayoutRect& layerBounds, const LayoutRect& damageRect, const RenderLayer* rootLayer, const LayoutPoint* offsetFromRoot = 0) const;
 
     // Bounding box relative to some ancestor layer. Pass offsetFromRoot if known.
     LayoutRect physicalBoundingBox(const RenderLayer* ancestorLayer, const LayoutPoint* offsetFromRoot = 0) const;
     LayoutRect physicalBoundingBoxIncludingReflectionAndStackingChildren(const RenderLayer* ancestorLayer, const LayoutPoint& offsetFromRoot) const;
 
@@ skipping 113 matching lines @@
     void paintLayer(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
 
     // paintLayerContents() assumes that the caller will clip to the bounds of the painting dirty rect if necessary.
     void paintLayerContents(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
 
     void paintLayerByApplyingTransform(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags, const LayoutPoint& translationOffset = LayoutPoint());
 
     void paintChildren(unsigned childrenToVisit, GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
 
     void paintForeground(GraphicsContext*, GraphicsContext* transparencyLayerContext,
-        const LayoutRect& transparencyPaintDirtyRect, bool haveTransparency, const LayerPaintingInfo&, RenderObject* paintingRootForRenderer,
+        const LayoutRect& transparencyPaintDirtyRect, bool haveTransparency, const LayerPaintingInfo&,
         LayoutPoint& layerLocation, ClipRect& layerForegroundRect);
-    void paintForegroundWithPhase(PaintPhase, GraphicsContext*, const LayerPaintingInfo&, RenderObject* paintingRootForRenderer,
+    void paintForegroundWithPhase(PaintPhase, GraphicsContext*, const LayerPaintingInfo&,
         LayoutPoint& layerLocation, ClipRect& layerForegroundRect);
-    void paintMask(GraphicsContext*, const LayerPaintingInfo&, RenderObject* paintingRootForRenderer,
+    void paintMask(GraphicsContext*, const LayerPaintingInfo&,
         LayoutPoint& layerLocation, ClipRect& layerBackgroundRect);
 
     RenderLayer* hitTestLayer(RenderLayer* rootLayer, RenderLayer* containerLayer, const HitTestRequest& request, HitTestResult& result,
                               const LayoutRect& hitTestRect, const HitTestLocation&, bool appliedTransform,
                               const HitTestingTransformState* transformState = 0, double* zOffset = 0);
     RenderLayer* hitTestLayerByApplyingTransform(RenderLayer* rootLayer, RenderLayer* containerLayer, const HitTestRequest&, HitTestResult&,
         const LayoutRect& hitTestRect, const HitTestLocation&, const HitTestingTransformState* = 0, double* zOffset = 0,
         const LayoutPoint& translationOffset = LayoutPoint());
     RenderLayer* hitTestChildren(ChildrenIteration, RenderLayer* rootLayer, const HitTestRequest&, HitTestResult&,
                              const LayoutRect& hitTestRect, const HitTestLocation&,
@@ skipping 70 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const blink::RenderLayer*);
 void showLayerTree(const blink::RenderObject*);
 #endif
 
 #endif  // SKY_ENGINE_CORE_RENDERING_RENDERLAYER_H_