Walk render tree instead of render layers for paint.

sky/engine/core/rendering/InlineTextBox.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 96 matching lines @@
 
 public:
     TextRun constructTextRunForInspector(RenderStyle*, const Font&) const;
     virtual FloatRect calculateBoundaries() const override { return FloatRect(x(), y(), width(), height()); }
 
     virtual LayoutRect localSelectionRect(int startPos, int endPos);
     bool isSelected(int startPos, int endPos) const;
     void selectionStartEnd(int& sPos, int& ePos);
 
 protected:
-    virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
+    virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom, Vector<RenderBox*>& layers) override;
     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) override;
 
 private:
     virtual void deleteLine() override final;
     virtual void extractLine() override final;
     virtual void attachLine() override final;
 
 public:
     virtual RenderObject::SelectionState selectionState() override final;
 
@@ skipping 71 matching lines @@
 
 inline AffineTransform InlineTextBox::rotation(const FloatRect& boxRect, RotationDirection rotationDirection)
 {
     return rotationDirection == Clockwise ? AffineTransform(0, 1, -1, 0, boxRect.x() + boxRect.maxY(), boxRect.maxY() - boxRect.x())
         : AffineTransform(0, -1, 1, 0, boxRect.x() - boxRect.maxY(), boxRect.x() + boxRect.maxY());
 }
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_INLINETEXTBOX_H_