Move a bunch more painting code out of RenderBoxModelObject and into BoxPainter.

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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
@@ skipping 1059 matching lines @@
 
     bool supportsPaintInvalidationStateCachedOffsets() const { return !hasColumns() && !hasTransform() && !hasReflection() && !style()->isFlippedBlocksWritingMode(); }
 
     void setNeedsOverflowRecalcAfterStyleChange();
     void markContainingBlocksForOverflowRecalc();
 
     // FIXME: This is temporary for cases that setShouldDoFullPaintInvalidation(true) doesn't work yet.
     void doNotUseInvalidatePaintForWholeRendererSynchronously() const { invalidatePaintForWholeRenderer(); }
     virtual LayoutRect viewRect() const;
 
+    // FIXME: make this not public.
+    void drawLineForBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2, BoxSide, Color, EBorderStyle, int adjbw1, int adjbw2, bool antialias = false);
+
 protected:
     inline bool layerCreationAllowedForSubtree() const;
 
     // Overrides should call the superclass at the end. m_style will be 0 the first time
     // this function will be called.
     virtual void styleWillChange(StyleDifference, const RenderStyle& newStyle);
     // Overrides should call the superclass at the start. |oldStyle| will be 0 the first
     // time this function is called.
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     void propagateStyleToAnonymousChildren(bool blockChildrenOnly = false);
     virtual void updateAnonymousChildStyle(const RenderObject* child, RenderStyle* style) const { }
 
-    void drawLineForBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2, BoxSide,
-                            Color, EBorderStyle, int adjbw1, int adjbw2, bool antialias = false);
     void drawDashedOrDottedBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2,
         BoxSide, Color, int thickness, EBorderStyle, bool antialias);
     void drawDoubleBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2,
         int length, BoxSide, Color, int thickness, int adjacentWidth1, int adjacentWidth2, bool antialias);
     void drawRidgeOrGrooveBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2,
         BoxSide, Color, EBorderStyle, int adjacentWidth1, int adjacentWidth2, bool antialias);
     void drawSolidBoxSide(GraphicsContext*, int x1, int y1, int x2, int y2,
         BoxSide, Color, int adjacentWidth1, int adjacentWidth2, bool antialias);
 
     void paintFocusRing(PaintInfo&, const LayoutPoint&, RenderStyle*);
@@ skipping 454 matching lines @@
 void showTree(const blink::RenderObject*);
 void showLineTree(const blink::RenderObject*);
 void showRenderTree(const blink::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const blink::RenderObject* object1, const blink::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h