diff --git a/content/base/public/nsINode.h b/content/base/public/nsINode.h
index 1c5c2ce9e79b..dee37680c515 100644
--- a/content/base/public/nsINode.h
+++ b/content/base/public/nsINode.h
@@ -65,8 +65,6 @@ inline bool IsSpaceCharacter(char aChar) {
          aChar == '\f';
 }
 class Element;
-struct BoxQuadOptions;
-class DOMQuad;
 class EventHandlerNonNull;
 class OnErrorEventHandlerNonNull;
 template<typename T> class Optional;
@@ -280,10 +278,6 @@ private:
 class nsINode : public mozilla::dom::EventTarget
 {
 public:
-  typedef mozilla::dom::BoxQuadOptions BoxQuadOptions;
-  typedef mozilla::dom::DOMQuad DOMQuad;
-  typedef mozilla::ErrorResult ErrorResult;
-
   NS_DECLARE_STATIC_IID_ACCESSOR(NS_INODE_IID)
 
   // Among the sub-classes that inherit (directly or indirectly) from nsINode,
@@ -1615,10 +1609,6 @@ public:
   mozilla::dom::Element* GetFirstElementChild() const;
   mozilla::dom::Element* GetLastElementChild() const;
 
-  void GetBoxQuads(const BoxQuadOptions& aOptions,
-                   nsTArray<nsRefPtr<DOMQuad> >& aResult,
-                   mozilla::ErrorResult& aRv);
-
 protected:
 
   // Override this function to create a custom slots class.
diff --git a/content/base/src/nsINode.cpp b/content/base/src/nsINode.cpp
index 13b479b42699..fa014abe28e5 100644
--- a/content/base/src/nsINode.cpp
+++ b/content/base/src/nsINode.cpp
@@ -103,7 +103,6 @@
 #include <algorithm>
 #include "nsGlobalWindow.h"
 #include "nsDOMMutationObserver.h"
-#include "GeometryUtils.h"
 
 using namespace mozilla;
 using namespace mozilla::dom;
@@ -1141,14 +1140,6 @@ nsINode::PreHandleEvent(EventChainPreVisitor& aVisitor)
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 
-void
-nsINode::GetBoxQuads(const BoxQuadOptions& aOptions,
-                     nsTArray<nsRefPtr<DOMQuad> >& aResult,
-                     mozilla::ErrorResult& aRv)
-{
-  mozilla::GetBoxQuads(this, aOptions, aResult, aRv);
-}
-
 nsresult
 nsINode::DispatchEvent(nsIDOMEvent *aEvent, bool* aRetVal)
 {
diff --git a/dom/webidl/GeometryUtils.webidl b/dom/webidl/GeometryUtils.webidl
deleted file mode 100644
index d34a614af224..000000000000
--- a/dom/webidl/GeometryUtils.webidl
+++ /dev/null
@@ -1,38 +0,0 @@
-/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * The origin of this IDL file is
- * http://dev.w3.org/csswg/cssom-view/
- *
- * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
- * liability, trademark and document use rules apply.
- */
-
-enum CSSBoxType { "margin", "border", "padding", "content" };
-dictionary BoxQuadOptions {
-  CSSBoxType box = "border";
-  GeometryNode relativeTo;
-};
-
-dictionary ConvertCoordinateOptions {
-  CSSBoxType fromBox = "border";
-  CSSBoxType toBox = "border";
-};
-
-[NoInterfaceObject]
-interface GeometryUtils {
-  [Throws, Pref="layout.css.getBoxQuads.enabled"]
-  sequence<DOMQuad> getBoxQuads(optional BoxQuadOptions options);
-//  DOMQuad convertQuadFromNode(DOMQuad quad, GeometryNode from, optional ConvertCoordinateOptions options);
-//  DOMQuad convertRectFromNode(DOMRectReadOnly rect, GeometryNode from, optional ConvertCoordinateOptions options);
-//  DOMPoint convertPointFromNode(DOMPointInit point, GeometryNode from, optional ConvertCoordinateOptions options);
-};
-
-Text implements GeometryUtils;
-Element implements GeometryUtils;
-// PseudoElement implements GeometryUtils;
-Document implements GeometryUtils;
-
-typedef (Text or Element /* or PseudoElement */ or Document) GeometryNode;
\ No newline at end of file
diff --git a/dom/webidl/moz.build b/dom/webidl/moz.build
index 3f11227fdf42..6e68fbbaefeb 100644
--- a/dom/webidl/moz.build
+++ b/dom/webidl/moz.build
@@ -115,7 +115,6 @@ WEBIDL_FILES = [
     'Function.webidl',
     'GainNode.webidl',
     'Geolocation.webidl',
-    'GeometryUtils.webidl',
     'GetUserMediaRequest.webidl',
     'History.webidl',
     'HTMLAnchorElement.webidl',
diff --git a/modules/libpref/src/init/all.js b/modules/libpref/src/init/all.js
index ea4aa6cc8e11..218c49cf0caf 100644
--- a/modules/libpref/src/init/all.js
+++ b/modules/libpref/src/init/all.js
@@ -1808,13 +1808,6 @@ pref("layout.css.DOMPoint.enabled", true);
 // Is support for DOMQuad enabled?
 pref("layout.css.DOMQuad.enabled", true);
 
-// Is support for GeometryUtils.getBoxQuads enabled?
-#ifdef RELEASE_BUILD
-pref("layout.css.getBoxQuads.enabled", false);
-#else
-pref("layout.css.getBoxQuads.enabled", true);
-#endif
-
 // Is support for CSS "text-align: true X" enabled?
 pref("layout.css.text-align-true-value.enabled", false);