Tighten up the allowable-child criteria in RenderSVGInline

Source/core/rendering/svg/RenderSVGInline.cpp

Index: Source/core/rendering/svg/RenderSVGInline.cpp
diff --git a/Source/core/rendering/svg/RenderSVGInline.cpp b/Source/core/rendering/svg/RenderSVGInline.cpp
index 6707906d526aef2cdee9e5ff1d97fcdabd4e6a78..51d884076255eb29491d563b09d896bdf9befaf1 100644
--- a/Source/core/rendering/svg/RenderSVGInline.cpp
+++ b/Source/core/rendering/svg/RenderSVGInline.cpp
@@ -41,6 +41,10 @@ bool RenderSVGInline::isChildAllowed(RenderObject* child, RenderStyle* style) co
         if (child->node()->hasTagName(SVGNames::aTag))
             return false;
     }
+
+    if (!child->isSVGInline() && !child->isSVGInlineText())
+        return false;
+
     return RenderInline::isChildAllowed(child, style);
 }