CanvasPathMethods should be shared with CRC2D and Path2D

Source/core/html/canvas/CanvasRenderingContext2D.idl

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 49 matching lines @@
     sequence<float> getLineDash();
     attribute float lineDashOffset;
 
     void clearRect(float x, float y, float width, float height);
     void fillRect(float x, float y, float width, float height);
 
     void beginPath();
 
     attribute Path2D currentPath;
 
-    // FIXME: These methods should be shared with CanvasRenderingContext2D in the CanvasPathMethods interface.
-    void closePath();
-    void moveTo(float x, float y);
-    void lineTo(float x, float y);
-    void quadraticCurveTo(float cpx, float cpy, float x, float y);
-    void bezierCurveTo(float cp1x, float cp1y, float cp2x, float cp2y, float x, float y);
-    [RaisesException] void arcTo(float x1, float y1, float x2, float y2, float radius);
-    void rect(float x, float y, float width, float height);
-    [RaisesException] void arc(float x, float y, float radius, float startAngle, float endAngle, [Default=Undefined] optional boolean anticlockwise);
-    [RaisesException] void ellipse(float x, float y, float radiusX, float radiusY, float rotation, float startAngle, float endAngle, [Default=Undefined] optional boolean anticlockwise);
-
     // FIXME: Simplify these using optional CanvasWindingRule once crbug.com/339000 gets fixed.
     void fill();
     [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] void fill(Path2D? path);
     void fill(CanvasWindingRule winding);
     [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] void fill(Path2D? path, CanvasWindingRule winding);
     void stroke();
     [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] void stroke(Path2D? path);
     // FIXME: Simplify these using optional CanvasWindingRule once crbug.com/339000 gets fixed.
     void clip();
     [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] void clip(Path2D? path);
@@ skipping 92 matching lines @@
     [RuntimeEnabled=ExperimentalCanvasFeatures] boolean drawCustomFocusRing(Element element);
 
     readonly attribute float webkitBackingStorePixelRatio;
 
     [ImplementedAs=imageSmoothingEnabled, MeasureAs=PrefixedImageSmoothingEnabled] attribute boolean webkitImageSmoothingEnabled;
     [MeasureAs=UnprefixedImageSmoothingEnabled] attribute boolean imageSmoothingEnabled;
 
     Canvas2DContextAttributes getContextAttributes();
 };
 
+CanvasRenderingContext2D implements CanvasPathMethods;