Don't anti-alias backgrounds of images.

Source/core/rendering/RenderImage.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 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
@@ skipping 63 matching lines @@
     }
 
 protected:
     virtual bool needsPreferredWidthsRecalculation() const override final;
     virtual RenderBox* embeddedContentBox() const override final;
     virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const override final;
 
     virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) override;
 
     virtual void paint(PaintInfo&, const LayoutPoint&) override final;
+    virtual void paintBoxDecorationBackground(PaintInfo&, const LayoutPoint&);

[mstensho (USE GERRIT), 2014/11/11 08:02:27]

override?

[chrishtr, 2014/11/11 19:34:21]

Done.

+
     virtual void layout() override;
     virtual bool updateImageLoadingPriorities() override final;
 
     virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectRenderImage || RenderReplaced::isOfType(type); }
 
 private:
     virtual const char* renderName() const override { return "RenderImage"; }
 
     virtual bool isImage() const override { return true; }
 
@@ skipping 23 matching lines @@
     float m_imageDevicePixelRatio;
 
     friend class RenderImageScaleObserver;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderImage, isRenderImage());
 
 } // namespace blink
 
 #endif // RenderImage_h