This CL clean up patch in SVGElements.

Source/core/svg/SVGTextContentElement.cpp

Index: Source/core/svg/SVGTextContentElement.cpp
diff --git a/Source/core/svg/SVGTextContentElement.cpp b/Source/core/svg/SVGTextContentElement.cpp
index 3937d9e35d855be8a690c590f6096b4bdff01e32..898941057b8cca044d5ebf8ebdffa656d0a51cca 100644
--- a/Source/core/svg/SVGTextContentElement.cpp
+++ b/Source/core/svg/SVGTextContentElement.cpp
@@ -254,10 +254,10 @@ bool SVGTextContentElement::selfHasRelativeLengths() const
 SVGTextContentElement* SVGTextContentElement::elementFromRenderer(LayoutObject* layoutObject)
 {
     if (!layoutObject)
-        return 0;
+        return nullptr;
 
     if (!layoutObject->isSVGText() && !layoutObject->isSVGInline())
-        return 0;
+        return nullptr;
 
     SVGElement* element = toSVGElement(layoutObject->node());
     ASSERT(element);