--- a/layout/svg/nsSVGMarkerFrame.cpp
+++ b/layout/svg/nsSVGMarkerFrame.cpp
@@ -262,17 +262,17 @@ NS_IMPL_FRAMEARENA_HELPERS(nsSVGMarkerAn
 #ifdef DEBUG
 void
 nsSVGMarkerAnonChildFrame::Init(nsIContent*       aContent,
                                 nsContainerFrame* aParent,
                                 nsIFrame*         aPrevInFlow)
 {
   MOZ_ASSERT(aParent->GetType() == nsGkAtoms::svgMarkerFrame,
              "Unexpected parent");
-  nsSVGMarkerAnonChildFrameBase::Init(aContent, aParent, aPrevInFlow);
+  nsSVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow);
 }
 #endif
 
 nsIAtom *
 nsSVGMarkerAnonChildFrame::GetType() const
 {
   return nsGkAtoms::svgMarkerAnonChildFrame;
 }

--- a/layout/svg/nsSVGMarkerFrame.h
+++ b/layout/svg/nsSVGMarkerFrame.h
@@ -128,29 +128,24 @@ private:
 
   // second recursion prevention flag, for GetCanvasTM()
   bool mInUse2;
 };
 
 ////////////////////////////////////////////////////////////////////////
 // nsMarkerAnonChildFrame class
 
-typedef nsSVGDisplayContainerFrame nsSVGMarkerAnonChildFrameBase;
-
-/**
- */
-class nsSVGMarkerAnonChildFrame
-  : public nsSVGMarkerAnonChildFrameBase
+class nsSVGMarkerAnonChildFrame : public nsSVGDisplayContainerFrame
 {
   friend nsContainerFrame*
   NS_NewSVGMarkerAnonChildFrame(nsIPresShell* aPresShell,
                                 nsStyleContext* aContext);
 
   explicit nsSVGMarkerAnonChildFrame(nsStyleContext* aContext)
-    : nsSVGMarkerAnonChildFrameBase(aContext)
+    : nsSVGDisplayContainerFrame(aContext)
   {}
 
 public:
   NS_DECL_FRAMEARENA_HELPERS
 
 #ifdef DEBUG
   virtual void Init(nsIContent*       aContent,
                     nsContainerFrame* aParent,