--- a/dom/webidl/SVGAnimatedPathData.webidl
+++ b/dom/webidl/SVGAnimatedPathData.webidl
@@ -7,14 +7,10 @@
  * http://www.w3.org/TR/SVG2/
  *
  * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
  * liability, trademark and document use rules apply.
  */
 
 [NoInterfaceObject]
 interface SVGAnimatedPathData {
-  readonly attribute SVGPathSegList pathSegList;
-  //readonly attribute SVGPathSegList normalizedPathSegList;
-  readonly attribute SVGPathSegList animatedPathSegList;
-  //readonly attribute SVGPathSegList animatedNormalizedPathSegList;
 };
 

--- a/dom/webidl/SVGPathElement.webidl
+++ b/dom/webidl/SVGPathElement.webidl
@@ -5,52 +5,12 @@
  *
  * The origin of this IDL file is
  * http://www.w3.org/TR/SVG2/
  *
  * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
  * liability, trademark and document use rules apply.
  */
 interface SVGPathElement : SVGGeometryElement {
-
-  unsigned long getPathSegAtLength(float distance);
-  [NewObject]
-  SVGPathSegClosePath createSVGPathSegClosePath();
-  [NewObject]
-  SVGPathSegMovetoAbs createSVGPathSegMovetoAbs(float x, float y);
-  [NewObject]
-  SVGPathSegMovetoRel createSVGPathSegMovetoRel(float x, float y);
-  [NewObject]
-  SVGPathSegLinetoAbs createSVGPathSegLinetoAbs(float x, float y);
-  [NewObject]
-  SVGPathSegLinetoRel createSVGPathSegLinetoRel(float x, float y);
-  [NewObject]
-  SVGPathSegCurvetoCubicAbs createSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1, float x2, float y2);
-  [NewObject]
-  SVGPathSegCurvetoCubicRel createSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1, float x2, float y2);
-  [NewObject]
-  SVGPathSegCurvetoQuadraticAbs createSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1);
-  [NewObject]
-  SVGPathSegCurvetoQuadraticRel createSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1);
-  [NewObject]
-  SVGPathSegArcAbs createSVGPathSegArcAbs(float x, float y, float r1, float r2, float angle, boolean largeArcFlag, boolean sweepFlag);
-  [NewObject]
-  SVGPathSegArcRel createSVGPathSegArcRel(float x, float y, float r1, float r2, float angle, boolean largeArcFlag, boolean sweepFlag);
-  [NewObject]
-  SVGPathSegLinetoHorizontalAbs createSVGPathSegLinetoHorizontalAbs(float x);
-  [NewObject]
-  SVGPathSegLinetoHorizontalRel createSVGPathSegLinetoHorizontalRel(float x);
-  [NewObject]
-  SVGPathSegLinetoVerticalAbs createSVGPathSegLinetoVerticalAbs(float y);
-  [NewObject]
-  SVGPathSegLinetoVerticalRel createSVGPathSegLinetoVerticalRel(float y);
-  [NewObject]
-  SVGPathSegCurvetoCubicSmoothAbs createSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2);
-  [NewObject]
-  SVGPathSegCurvetoCubicSmoothRel createSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2);
-  [NewObject]
-  SVGPathSegCurvetoQuadraticSmoothAbs createSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y);
-  [NewObject]
-  SVGPathSegCurvetoQuadraticSmoothRel createSVGPathSegCurvetoQuadraticSmoothRel(float x, float y);
 };
 
 SVGPathElement implements SVGAnimatedPathData;
 

--- a/dom/webidl/SVGPathSeg.webidl
+++ b/dom/webidl/SVGPathSeg.webidl
@@ -5,16 +5,17 @@
  *
  * The origin of this IDL file is
  * http://www.w3.org/TR/SVG2/
  *
  * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
  * liability, trademark and document use rules apply.
  */
 
+[NoInterfaceObject]
 interface SVGPathSeg {
 
   // Path Segment Types
   const unsigned short PATHSEG_UNKNOWN = 0;
   const unsigned short PATHSEG_CLOSEPATH = 1;
   const unsigned short PATHSEG_MOVETO_ABS = 2;
   const unsigned short PATHSEG_MOVETO_REL = 3;
   const unsigned short PATHSEG_LINETO_ABS = 4;
@@ -35,99 +36,109 @@ interface SVGPathSeg {
   const unsigned short PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;
 
   [Pure]
   readonly attribute unsigned short pathSegType;
   [Pure]
   readonly attribute DOMString pathSegTypeAsLetter;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegClosePath : SVGPathSeg {
 };
 
+[NoInterfaceObject]
 interface SVGPathSegMovetoAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegMovetoRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegLinetoAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegLinetoRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoCubicAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float x1;
   [SetterThrows]
   attribute float y1;
   [SetterThrows]
   attribute float x2;
   [SetterThrows]
   attribute float y2;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoCubicRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float x1;
   [SetterThrows]
   attribute float y1;
   [SetterThrows]
   attribute float x2;
   [SetterThrows]
   attribute float y2;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoQuadraticAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float x1;
   [SetterThrows]
   attribute float y1;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoQuadraticRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float x1;
   [SetterThrows]
   attribute float y1;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegArcAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float r1;
   [SetterThrows]
@@ -135,16 +146,17 @@ interface SVGPathSegArcAbs : SVGPathSeg 
   [SetterThrows]
   attribute float angle;
   [SetterThrows]
   attribute boolean largeArcFlag;
   [SetterThrows]
   attribute boolean sweepFlag;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegArcRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float r1;
   [SetterThrows]
@@ -152,64 +164,72 @@ interface SVGPathSegArcRel : SVGPathSeg 
   [SetterThrows]
   attribute float angle;
   [SetterThrows]
   attribute boolean largeArcFlag;
   [SetterThrows]
   attribute boolean sweepFlag;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegLinetoHorizontalAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegLinetoHorizontalRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegLinetoVerticalAbs : SVGPathSeg {
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegLinetoVerticalRel : SVGPathSeg {
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoCubicSmoothAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float x2;
   [SetterThrows]
   attribute float y2;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoCubicSmoothRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
   [SetterThrows]
   attribute float x2;
   [SetterThrows]
   attribute float y2;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoQuadraticSmoothAbs : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
 };
 
+[NoInterfaceObject]
 interface SVGPathSegCurvetoQuadraticSmoothRel : SVGPathSeg {
   [SetterThrows]
   attribute float x;
   [SetterThrows]
   attribute float y;
 };
 

--- a/dom/webidl/SVGPathSegList.webidl
+++ b/dom/webidl/SVGPathSegList.webidl
@@ -5,28 +5,11 @@
  *
  * The origin of this IDL file is
  * http://www.w3.org/TR/SVG11/
  *
  * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
  * liability, trademark and document use rules apply.
  */
 
+[NoInterfaceObject]
 interface SVGPathSegList {
-  readonly attribute unsigned long numberOfItems;
-  [Throws]
-  void clear();
-  [Throws]
-  SVGPathSeg initialize(SVGPathSeg newItem);
-  [Throws]
-  getter SVGPathSeg getItem(unsigned long index);
-  [Throws]
-  SVGPathSeg insertItemBefore(SVGPathSeg newItem, unsigned long index);
-  [Throws]
-  SVGPathSeg replaceItem(SVGPathSeg newItem, unsigned long index);
-  [Throws]
-  SVGPathSeg removeItem(unsigned long index);
-  [Throws]
-  SVGPathSeg appendItem(SVGPathSeg newItem);
-
-  // Mozilla-specific stuff
-  readonly attribute unsigned long length; // synonym for numberOfItems
 };