--- a/layout/base/nsCSSFrameConstructor.cpp
+++ b/layout/base/nsCSSFrameConstructor.cpp
@@ -152,16 +152,18 @@ nsIFrame*
 NS_NewSVGGenericContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsContainerFrame*
 NS_NewSVGForeignObjectFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsIFrame*
 NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsIFrame*
 NS_NewSVGSwitchFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsIFrame*
+NS_NewSVGSymbolFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+nsIFrame*
 NS_NewSVGTextFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsIFrame*
 NS_NewSVGContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsIFrame*
 NS_NewSVGUseFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 nsIFrame*
 NS_NewSVGViewFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
 extern nsIFrame*
@@ -5573,16 +5575,17 @@ nsCSSFrameConstructor::FindSVGData(Eleme
              aTag == nsGkAtoms::textPath) {
     return &sSuppressData;
   }
 
   static const FrameConstructionDataByTag sSVGData[] = {
     SIMPLE_SVG_CREATE(svg, NS_NewSVGInnerSVGFrame),
     SIMPLE_SVG_CREATE(g, NS_NewSVGGFrame),
     SIMPLE_SVG_CREATE(svgSwitch, NS_NewSVGSwitchFrame),
+    SIMPLE_SVG_CREATE(symbol, NS_NewSVGSymbolFrame),
     SIMPLE_SVG_CREATE(polygon, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(polyline, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(circle, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(ellipse, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(line, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(rect, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(path, NS_NewSVGGeometryFrame),
     SIMPLE_SVG_CREATE(defs, NS_NewSVGContainerFrame),

--- a/layout/generic/nsFrame.h
+++ b/layout/generic/nsFrame.h
@@ -641,16 +641,17 @@ public:
         aDisp->mOverflowY == NS_STYLE_OVERFLOW_HIDDEN) {
       // REVIEW: these are the frame types that set up clipping.
       mozilla::LayoutFrameType type = aFrame->Type();
       if (type == mozilla::LayoutFrameType::Table ||
           type == mozilla::LayoutFrameType::TableCell ||
           type == mozilla::LayoutFrameType::BCTableCell ||
           type == mozilla::LayoutFrameType::SVGOuterSVG ||
           type == mozilla::LayoutFrameType::SVGInnerSVG ||
+          type == mozilla::LayoutFrameType::SVGSymbol ||
           type == mozilla::LayoutFrameType::SVGForeignObject) {
         return true;
       }
       if (aFrame->IsFrameOfType(nsIFrame::eReplacedContainsBlock)) {
         if (type == mozilla::LayoutFrameType::TextInput) {
           // It always has an anonymous scroll frame that handles any overflow.
           return false;
         }