Remove background obscuration checks.

sky/engine/core/rendering/RenderBoxModelObject.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 137 matching lines @@
     bool hasInlineDirectionBordersPaddingOrMargin() const { return hasInlineDirectionBordersOrPadding() || marginStart()|| marginEnd(); }
     bool hasInlineDirectionBordersOrPadding() const { return borderStart() || borderEnd() || paddingStart()|| paddingEnd(); }
 
     LayoutUnit containingBlockLogicalWidthForContent() const;
 
     void paintBorder(const PaintInfo&, const LayoutRect&, const RenderStyle*, BackgroundBleedAvoidance = BackgroundBleedNone, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
     bool paintNinePieceImage(GraphicsContext*, const LayoutRect&, const RenderStyle*, const NinePieceImage&);
     void paintBoxShadow(const PaintInfo&, const LayoutRect&, const RenderStyle*, ShadowStyle, bool includeLogicalLeftEdge = true, bool includeLogicalRightEdge = true);
     void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, InlineFlowBox* = 0, const LayoutSize& = LayoutSize(), RenderObject* backgroundObject = 0, bool skipBaseColor = false);
 
-    virtual bool boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, InlineFlowBox* = 0) const;
+    bool boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, InlineFlowBox* = 0) const;
 
     // Overridden by subclasses to determine line height and baseline position.
     virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
     virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const = 0;
 
     virtual void mapAbsoluteToLocalPoint(MapCoordinatesFlags, TransformState&) const override;
     virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const override;
 
     virtual void setSelectionState(SelectionState) override;
 
@@ skipping 119 matching lines @@
     void drawBoxSideFromPath(GraphicsContext*, const LayoutRect&, const Path&, const class BorderEdge[],
                             float thickness, float drawThickness, BoxSide, const RenderStyle*,
                             Color, EBorderStyle, BackgroundBleedAvoidance, bool includeLogicalLeftEdge, bool includeLogicalRightEdge);
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBoxModelObject, isBoxModelObject());
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_RENDERBOXMODELOBJECT_H_