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

Source/core/html/canvas/CanvasRenderingContext2D.h

Index: Source/core/html/canvas/CanvasRenderingContext2D.h
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.h b/Source/core/html/canvas/CanvasRenderingContext2D.h
index 543754c82916c38cbbaa6252ddb950225510356e..d9bf238af38dde8674166e26f69ed3525ec8109c 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.h
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.h
@@ -150,8 +150,11 @@ public:
     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);
@@ -306,6 +309,10 @@ private:
     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();