Add versions of stroke, fill, and clip that take a Path parameter.

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 132 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<DOMPath> currentPath();
     void setCurrentPath(DOMPath*);
     void fill(const String& winding = "nonzero");
+    void fill(DOMPath*, const String& winding = "nonzero");
     void stroke();
+    void stroke(DOMPath*);
     void clip(const String& winding = "nonzero");
+    void clip(DOMPath*, const String& winding = "nonzero");
 
     bool isPointInPath(const float x, const float y, const String& winding = "nonzero");
     bool isPointInStroke(const float x, const float y);
 
     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);
 
     void setShadow(float width, float height, float blur);
     void setShadow(float width, float height, float blur, const String& color);
@@ skipping 134 matching lines @@
     void realizeSaves()
     {
         if (m_unrealizedSaveCount)
             realizeSavesLoop();
     }
     void realizeSavesLoop();
 
     void applyStrokePattern();
     void applyFillPattern();
 
+    void fillImpl(const Path&, const String& windingRuleString);
+    void strokeImpl(const Path&);
+    void clipImpl(const Path&, const String& windingRuleString);
+
     void drawTextInternal(const String& text, float x, float y, bool fill, float maxWidth = 0, bool useMaxWidth = false);
 
     const Font& accessFont();
 
     void clearCanvas();
     bool rectContainsTransformedRect(const FloatRect&, const FloatRect&) const;
 
     void inflateStrokeRect(FloatRect&) const;
 
     template<class T> void fullCanvasCompositedFill(const T&);
@@ skipping 16 matching lines @@
     bool m_usesCSSCompatibilityParseMode;
     bool m_hasAlpha;
     MutableStylePropertyMap m_fetchedFonts;
 };
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D, CanvasRenderingContext, context, context->is2d(), context.is2d());
 
 } // namespace WebCore
 
 #endif