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 90b1fc7ea51ce52be4d1826e089b2c00cf38057f..baedc4904af3800c8d3e9f220bf94eaa8521445f 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.h
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.h
@@ -148,8 +148,11 @@ 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);
@@ -302,6 +305,10 @@ private:
     void applyStrokePattern();
     void applyFillPattern();
 
+    void fillInternal(const Path&, const String& windingRuleString);
+    void strokeInternal(const Path&);
+    void clipInternal(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();