We don't need overloading about fill, clip, isPointInPath anymore.

Source/core/html/canvas/CanvasRenderingContext2D.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012 Apple 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 134 matching lines @@
     void setFillColor(const String& color, float alpha);
     void setFillColor(float grayLevel, float alpha);
     void setFillColor(float r, float g, float b, float a);
     void setFillColor(float c, float m, float y, float k, float a);
 
     void beginPath();
 
     PassRefPtr<Path2D> currentPath();
     void setCurrentPath(Path2D*);
     void fill(const String& winding = "nonzero");
-    void fill(Path2D*);
-    void fill(Path2D*, const String& winding);
+    void fill(Path2D*, const String& winding = "nonzero");
     void stroke();
     void stroke(Path2D*);
     void clip(const String& winding = "nonzero");
-    void clip(Path2D*);
-    void clip(Path2D*, const String& winding);
+    void clip(Path2D*, const String& winding = "nonzero");
 
     bool isPointInPath(const float x, const float y, const String& winding = "nonzero");
-    bool isPointInPath(Path2D*, const float x, const float y);
-    bool isPointInPath(Path2D*, const float x, const float y, const String& winding);
+    bool isPointInPath(Path2D*, const float x, const float y, const String& winding = "nonzero");
     bool isPointInStroke(const float x, const float y);
     bool isPointInStroke(Path2D*, const float x, const float y);
 
     void scrollPathIntoView();
     void scrollPathIntoView(Path2D*);
 
     void clearRect(float x, float y, float width, float height);
     void fillRect(float x, float y, float width, float height);
     void strokeRect(float x, float y, float width, float height);
 
@@ skipping 181 matching lines @@
     Timer<CanvasRenderingContext2D> m_dispatchContextLostEventTimer;
     Timer<CanvasRenderingContext2D> m_dispatchContextRestoredEventTimer;
     Timer<CanvasRenderingContext2D> m_tryRestoreContextEventTimer;
 };
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D, CanvasRenderingContext, context, context->is2d(), context.is2d());
 
 } // namespace WebCore
 
 #endif