Convert SVG <text> and descendants to use RenderObject::isChildAllowed

Source/core/svg/SVGAltGlyphElement.cpp

Index: Source/core/svg/SVGAltGlyphElement.cpp
diff --git a/Source/core/svg/SVGAltGlyphElement.cpp b/Source/core/svg/SVGAltGlyphElement.cpp
index 62eea20a36bb8dbbfca810a74adc651ae91f8824..d518d59d408795d316af0afcee99ca03dad6cb4f 100644
--- a/Source/core/svg/SVGAltGlyphElement.cpp
+++ b/Source/core/svg/SVGAltGlyphElement.cpp
@@ -75,13 +75,6 @@ const AtomicString& SVGAltGlyphElement::format() const
     return fastGetAttribute(SVGNames::formatAttr);
 }
 
-bool SVGAltGlyphElement::childShouldCreateRenderer(const Node& child) const
-{
-    if (child.isTextNode())
-        return true;
-    return false;
-}
-
 RenderObject* SVGAltGlyphElement::createRenderer(RenderStyle*)
 {
     return new RenderSVGTSpan(this);