CanvasPathMethods should be shared with CRC2D and Path2D

Source/core/html/canvas/Path.idl

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2012, 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 17 matching lines @@
 
 [
     RuntimeEnabled=ExperimentalCanvasFeatures,
     Constructor,
     Constructor(Path path),
     Constructor(DOMString text),
     ImplementedAs=DOMPath
 ] interface Path {
 
     [RaisesException] void addPath(Path? path, SVGMatrix? transform);
+};
 
-    // FIXME: These methods should be shared with CanvasRenderingContext2D in the CanvasPathMethods interface.
-    void closePath();
-    void moveTo([Default=Undefined] optional float x,
-                [Default=Undefined] optional float y);
-    void lineTo([Default=Undefined] optional float x,
-                [Default=Undefined] optional float y);
-    void quadraticCurveTo([Default=Undefined] optional float cpx,
-                          [Default=Undefined] optional float cpy,
-                          [Default=Undefined] optional float x,
-                          [Default=Undefined] optional float y);
-    void bezierCurveTo([Default=Undefined] optional float cp1x,
-                       [Default=Undefined] optional float cp1y,
-                       [Default=Undefined] optional float cp2x,
-                       [Default=Undefined] optional float cp2y,
-                       [Default=Undefined] optional float x,
-                       [Default=Undefined] optional float y);
-    [RaisesException] void arcTo([Default=Undefined] optional float x1,
-               [Default=Undefined] optional float y1,
-               [Default=Undefined] optional float x2,
-               [Default=Undefined] optional float y2,
-               [Default=Undefined] optional float radius);
-    void rect([Default=Undefined] optional float x,
-              [Default=Undefined] optional float y,
-              [Default=Undefined] optional float width,
-              [Default=Undefined] optional float height);
-    [RaisesException] void arc([Default=Undefined] optional float x,
-             [Default=Undefined] optional float y,
-             [Default=Undefined] optional float radius,
-             [Default=Undefined] optional float startAngle,
-             [Default=Undefined] optional float endAngle,
-             [Default=Undefined] optional boolean anticlockwise);
-};
+Path implements CanvasPathMethods;