Disable display: contents in SVG.

third_party/WebKit/Source/core/svg/SVGElement.h

Index: third_party/WebKit/Source/core/svg/SVGElement.h
diff --git a/third_party/WebKit/Source/core/svg/SVGElement.h b/third_party/WebKit/Source/core/svg/SVGElement.h
index bf453f915606f77abf257048f8afce72ac48a439..22a6c1ef5b00592b2ccd039c72aea353659ea4f7 100644
--- a/third_party/WebKit/Source/core/svg/SVGElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGElement.h
@@ -148,6 +148,7 @@ class CORE_EXPORT SVGElement : public Element {
   void synchronizeAnimatedSVGAttribute(const QualifiedName&) const;
 
   PassRefPtr<ComputedStyle> customStyleForLayoutObject() final;
+  bool layoutObjectIsNeeded(const ComputedStyle&) override;
 
 #if DCHECK_IS_ON()
   virtual bool isAnimatableAttribute(const QualifiedName&) const;