diff --git a/layout/base/ShapeUtils.cpp b/layout/base/ShapeUtils.cpp
index ea41617e7cb9..e671d1bbbd60 100644
--- a/layout/base/ShapeUtils.cpp
+++ b/layout/base/ShapeUtils.cpp
@@ -8,9 +8,6 @@
 
 #include <cstdlib>
 
-#include "nsCSSRendering.h"
-#include "nsStyleStruct.h"
-
 namespace mozilla {
 
 nscoord
@@ -33,16 +30,4 @@ ShapeUtils::ComputeShapeRadius(const StyleShapeRadius aType,
   return length;
 }
 
-nsPoint
-ShapeUtils::ComputeCircleOrEllipseCenter(StyleBasicShape* const aBasicShape,
-                                         const nsRect& aRefBox)
-{
-  nsPoint topLeft, anchor;
-  nsSize size(aRefBox.Size());
-  nsImageRenderer::ComputeObjectAnchorPoint(aBasicShape->GetPosition(),
-                                            size, size,
-                                            &topLeft, &anchor);
-  return nsPoint(anchor.x + aRefBox.x, anchor.y + aRefBox.y);
-}
-
 } // namespace mozilla
diff --git a/layout/base/ShapeUtils.h b/layout/base/ShapeUtils.h
index e763fec8c3d1..3f051c2d0ff6 100644
--- a/layout/base/ShapeUtils.h
+++ b/layout/base/ShapeUtils.h
@@ -10,11 +10,7 @@
 #include "nsCoord.h"
 #include "nsStyleConsts.h"
 
-struct nsPoint;
-struct nsRect;
-
 namespace mozilla {
-class StyleBasicShape;
 
 // ShapeUtils is a namespace class containing utility functions related to
 // processing basic shapes in the CSS Shapes Module.
@@ -32,14 +28,6 @@ struct ShapeUtils final
                                     const nscoord aCenter,
                                     const nscoord aPosMin,
                                     const nscoord aPosMax);
-
-  // Compute the center of a circle or an ellipse.
-  //
-  // @param aRefBox The reference box of the basic shape.
-  // @return The point of the center.
-  static nsPoint ComputeCircleOrEllipseCenter(
-    StyleBasicShape* const aBasicShape,
-    const nsRect& aRefBox);
 };
 
 } // namespace mozilla
diff --git a/layout/svg/nsCSSClipPathInstance.cpp b/layout/svg/nsCSSClipPathInstance.cpp
index a8440908f675..d51d074c26d9 100644
--- a/layout/svg/nsCSSClipPathInstance.cpp
+++ b/layout/svg/nsCSSClipPathInstance.cpp
@@ -113,8 +113,12 @@ nsCSSClipPathInstance::CreateClipPathCircle(DrawTarget* aDrawTarget,
 
   RefPtr<PathBuilder> builder = aDrawTarget->CreatePathBuilder();
 
-  nsPoint center =
-    ShapeUtils::ComputeCircleOrEllipseCenter(basicShape, aRefBox);
+  nsPoint topLeft, anchor;
+  nsSize size = nsSize(aRefBox.width, aRefBox.height);
+  nsImageRenderer::ComputeObjectAnchorPoint(basicShape->GetPosition(),
+                                            size, size,
+                                            &topLeft, &anchor);
+  nsPoint center(anchor.x + aRefBox.x, anchor.y + aRefBox.y);
 
   const nsTArray<nsStyleCoord>& coords = basicShape->Coordinates();
   MOZ_ASSERT(coords.Length() == 1, "wrong number of arguments");
@@ -159,8 +163,12 @@ nsCSSClipPathInstance::CreateClipPathEllipse(DrawTarget* aDrawTarget,
 
   RefPtr<PathBuilder> builder = aDrawTarget->CreatePathBuilder();
 
-  nsPoint center =
-    ShapeUtils::ComputeCircleOrEllipseCenter(basicShape, aRefBox);
+  nsPoint topLeft, anchor;
+  nsSize size = nsSize(aRefBox.width, aRefBox.height);
+  nsImageRenderer::ComputeObjectAnchorPoint(basicShape->GetPosition(),
+                                            size, size,
+                                            &topLeft, &anchor);
+  nsPoint center(anchor.x + aRefBox.x, anchor.y + aRefBox.y);
 
   const nsTArray<nsStyleCoord>& coords = basicShape->Coordinates();
   MOZ_ASSERT(coords.Length() == 2, "wrong number of arguments");