Remove a bit more position:fixed plumbing.

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 349 matching lines @@
 
     // FIXME: This should probably return a ScrollableArea but a lot of internal methods are mistakenly exposed.
     RenderLayerScrollableArea* scrollableArea() const { return m_scrollableArea.get(); }
     RenderLayerRepainter& paintInvalidator() { return m_paintInvalidator; }
     RenderLayerClipper& clipper() { return m_clipper; }
     const RenderLayerClipper& clipper() const { return m_clipper; }
 
     inline bool isPositionedContainer() const
     {
         // FIXME: This is not in sync with containingBlock.
-        // RenderObject::canContainFixedPositionedObject() should probably be used
-        // instead.
         RenderLayerModelObject* layerRenderer = renderer();
         return isRootLayer() || layerRenderer->isPositioned() || hasTransform();
     }
 
     // paintLayer() assumes that the caller will clip to the bounds of the painting dirty if necessary.
     void paintLayer(GraphicsContext*, const LayerPaintingInfo&, PaintLayerFlags);
 
     bool scrollsOverflow() const;
 
     CompositingReasons potentialCompositingReasonsFromStyle() const { return m_potentialCompositingReasonsFromStyle; }
@@ skipping 302 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 // RenderLayer_h