Don't anti-alias backgrounds of images.

Source/core/rendering/RenderImage.cpp

Index: Source/core/rendering/RenderImage.cpp
diff --git a/Source/core/rendering/RenderImage.cpp b/Source/core/rendering/RenderImage.cpp
index 6278c9721c02e4d4f942e6f65385bc49d3abf433..d22459a9c54785fc6be3fd635bcf7a07354f191a 100644
--- a/Source/core/rendering/RenderImage.cpp
+++ b/Source/core/rendering/RenderImage.cpp
@@ -280,6 +280,11 @@ void RenderImage::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
     ImagePainter(*this).paint(paintInfo, paintOffset);
 }
 
+void RenderImage::paintBoxDecorationBackground(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
+{
+    ImagePainter(*this).paintBoxDecorationBackground(paintInfo, paintOffset);
+}
+
 void RenderImage::areaElementFocusChanged(HTMLAreaElement* areaElement)
 {
     ASSERT(areaElement->imageElement() == node());