Refactor code for calculating background image geometry

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 e65e179d8e33b38f6b26b1b3731f835cfc44854c..c8c46873e47ffad6dc121640f4f25d8ffcb2de3e 100644
--- a/Source/core/paint/BoxPainter.h
+++ b/Source/core/paint/BoxPainter.h
@@ -36,7 +36,6 @@ public:
     void paintMaskImages(const PaintInfo&, const LayoutRect&);
     void paintBoxDecorationBackgroundWithRect(const PaintInfo&, const LayoutPoint&, const LayoutRect&);
     static void paintFillLayerExtended(LayoutBoxModelObject&, const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, InlineFlowBox* = nullptr, const LayoutSize& = LayoutSize(), SkXfermode::Mode = SkXfermode::kSrcOver_Mode, LayoutObject* backgroundObject = nullptr);
-    static void calculateBackgroundImageGeometry(const LayoutBoxModelObject&, const LayoutBoxModelObject* paintContainer, const GlobalPaintFlags, const FillLayer&, const LayoutRect& paintRect, BackgroundImageGeometry&, LayoutObject* backgroundObject = nullptr);
     static InterpolationQuality chooseInterpolationQuality(LayoutObject&, GraphicsContext*, Image*, const void*, const LayoutSize&);
     static bool paintNinePieceImage(LayoutBoxModelObject&, GraphicsContext*, const LayoutRect&, const ComputedStyle&, const NinePieceImage&, SkXfermode::Mode = SkXfermode::kSrcOver_Mode);
     static void paintBorder(LayoutBoxModelObject&, const PaintInfo&, const LayoutRect&, const ComputedStyle&, BackgroundBleedAvoidance = BackgroundBleedNone, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
@@ -52,8 +51,6 @@ private:
     static FloatRoundedRect getBackgroundRoundedRect(LayoutObject&, const LayoutRect&, InlineFlowBox*, LayoutUnit inlineBoxWidth, LayoutUnit inlineBoxHeight,
         bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
     static void applyBoxShadowForBackground(GraphicsContext*, LayoutObject&);
-    static bool fixedBackgroundPaintsInLocalCoordinates(const LayoutObject&, const GlobalPaintFlags);
-    static IntSize calculateFillTileSize(const LayoutBoxModelObject&, const FillLayer&, const IntSize& scaledPositioningAreaSize);
 
     LayoutRect boundsForDrawingRecorder(const LayoutPoint& paintOffset);