--- a/gfx/layers/wr/WebRenderLayer.cpp
+++ b/gfx/layers/wr/WebRenderLayer.cpp
@@ -41,25 +41,16 @@ WebRenderLayer::GetImageKey()
 }
 
 LayerRect
 WebRenderLayer::RelativeToVisible(const LayerRect& aRect)
 {
   return aRect - Bounds().TopLeft();
 }
 
-Rect
-WebRenderLayer::RelativeToTransformedVisible(Rect aRect)
-{
-  IntRect bounds = GetLayer()->GetVisibleRegion().GetBounds().ToUnknownRect();
-  Rect transformed = GetLayer()->GetTransform().TransformBounds(IntRectToRect(bounds));
-  aRect.MoveBy(-transformed.x, -transformed.y);
-  return aRect;
-}
-
 LayerRect
 WebRenderLayer::ParentStackingContextBounds()
 {
   // Walk up to find the parent stacking context. This will be created either
   // by the nearest scrollable metrics, or by the parent layer which must be a
   // ContainerLayer.
   if (Layer* parent = GetLayer()->GetParent()) {
     return ToWebRenderLayer(parent)->Bounds();

--- a/gfx/layers/wr/WebRenderLayer.h
+++ b/gfx/layers/wr/WebRenderLayer.h
@@ -42,17 +42,16 @@ public:
                                      Maybe<wr::ImageKey>& aOldKey,
                                      wr::ExternalImageId& aExternalImageId);
 
   WebRenderLayerManager* WrManager();
   WebRenderBridgeChild* WrBridge();
   WrImageKey GetImageKey();
 
   LayerRect RelativeToVisible(const LayerRect& aRect);
-  gfx::Rect RelativeToTransformedVisible(gfx::Rect aRect);
   LayerRect ParentStackingContextBounds();
   LayerRect RelativeToParent(const LayerRect& aRect);
   LayerRect RelativeToParent(const LayoutDeviceRect& aRect);
   LayerRect VisibleBoundsRelativeToParent();
   LayerPoint GetOffsetToParent();
   gfx::Rect TransformedVisibleBoundsRelativeToParent();
 protected:
   LayerRect Bounds();