Move painting code from RenderBoxModelObject into BoxPainter.

Source/core/paint/BoxPainter.h

Index: Source/core/paint/BoxPainter.h
diff --git a/Source/core/paint/BoxPainter.h b/Source/core/paint/BoxPainter.h
index b67912d3848d5424b8f6f09dd59bd3e5f9c0acfc..96cd3183d4f87697e177875d3d7231c99798c263 100644
--- a/Source/core/paint/BoxPainter.h
+++ b/Source/core/paint/BoxPainter.h
@@ -25,11 +25,23 @@ public:
     void paintFillLayers(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone, CompositeOperator = CompositeSourceOver, RenderObject* backgroundObject = 0);
     void paintMaskImages(const PaintInfo&, const LayoutRect&);
     void paintBoxDecorationBackgroundWithRect(PaintInfo&, const LayoutPoint&, const LayoutRect&);
+    void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, InlineFlowBox* = 0, const LayoutSize& = LayoutSize(), CompositeOperator = CompositeSourceOver, RenderObject* backgroundObject = 0, bool skipBaseColor = false);
+    void calculateBackgroundImageGeometry(const RenderLayerModelObject* paintContainer, const FillLayer&, const LayoutRect& paintRect, BackgroundImageGeometry&, RenderObject* = 0) const;
+    InterpolationQuality chooseInterpolationQuality(GraphicsContext*, Image*, const void*, const LayoutSize&);
+    static void clipRoundedInnerRect(GraphicsContext*, const LayoutRect&, const RoundedRect& clipRect);
 
 private:
     void paintBackground(const PaintInfo&, const LayoutRect&, const Color& backgroundColor, BackgroundBleedAvoidance = BackgroundBleedNone);
     void paintRootBoxFillLayers(const PaintInfo&);
     void paintFillLayer(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, CompositeOperator, RenderObject* backgroundObject, bool skipBaseColor = false);
+    void paintRootBackgroundColor(const PaintInfo&, const LayoutRect&, const Color&);
+    RoundedRect backgroundRoundedRectAdjustedForBleedAvoidance(GraphicsContext*, const LayoutRect&, BackgroundBleedAvoidance, InlineFlowBox*, const LayoutSize&, bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const;
+    RoundedRect getBackgroundRoundedRect(const LayoutRect&, InlineFlowBox*, LayoutUnit inlineBoxWidth, LayoutUnit inlineBoxHeight,
+        bool includeLogicalLeftEdge, bool includeLogicalRightEdge) const;
+    bool isDocumentElementWithOpaqueBackground() const;
+    void applyBoxShadowForBackground(GraphicsContext*);
+    bool fixedBackgroundPaintsInLocalCoordinates() const;
+    IntSize calculateFillTileSize(const FillLayer&, const IntSize& scaledPositioningAreaSize) const;
 
     // FIXME: this should be const.
     RenderBox& m_renderBox;