Apply SVG viewport clips in PaintLayer; paint background of replaced like boxes.

third_party/WebKit/Source/core/paint/SVGRootPainter.cpp

Index: third_party/WebKit/Source/core/paint/SVGRootPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/SVGRootPainter.cpp b/third_party/WebKit/Source/core/paint/SVGRootPainter.cpp
index 3a8ac94a73ac3a16ee72d2e153064e940b7d162a..66aa8b638366de3808068f6ee6ff4418a5ec5486 100644
--- a/third_party/WebKit/Source/core/paint/SVGRootPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/SVGRootPainter.cpp
@@ -43,10 +43,6 @@ void SVGRootPainter::paintReplaced(const PaintInfo& paintInfo,
   if (pixelSnappedSize(paintOffset).isEmpty())
     return;
 
-  // SVG outlines are painted during PaintPhaseForeground.
-  if (shouldPaintSelfOutline(paintInfo.phase))
-    return;
-
   // An empty viewBox also disables rendering.
   // (http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute)
   SVGSVGElement* svg = toSVGSVGElement(m_layoutSVGRoot.node());