Use StrictTypeChecking for methods on CRC2D that accepts Path2D

Source/core/html/canvas/Path2D.h

 /*
  * Copyright (C) 2012, 2013 Adobe Systems Incorporated. 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
@@ skipping 31 matching lines @@
     WTF_MAKE_NONCOPYABLE(Path2D); WTF_MAKE_FAST_ALLOCATED;
 public:
     static PassRefPtr<Path2D> create() { return adoptRef(new Path2D); }
     static PassRefPtr<Path2D> create(const String& pathData) { return adoptRef(new Path2D(pathData)); }
     static PassRefPtr<Path2D> create(Path2D* path) { return adoptRef(new Path2D(path)); }
 
     static PassRefPtr<Path2D> create(const Path& path) { return adoptRef(new Path2D(path)); }
 
     const Path& path() const { return m_path; }
 
-    void addPath(Path2D* path, ExceptionState& exceptionState)
+    void addPath(Path2D* path)
     {
-        addPath(path, 0, exceptionState);
+        addPath(path, 0);
     }
 
-    void addPath(Path2D* path, SVGMatrixTearOff* transform, ExceptionState& exceptionState)
+    void addPath(Path2D* path, SVGMatrixTearOff* transform)
     {
-        if (!path) {
-            exceptionState.throwTypeError(ExceptionMessages::argumentNullOrIncorrectType(1, "Path"));
-            return;
-        }
         Path src = path->path();
         m_path.addPath(src, transform ? transform->value() : AffineTransform(1, 0, 0, 1, 0, 0));
     }
     virtual ~Path2D() { }
 private:
     Path2D() : CanvasPathMethods()
     {
         ScriptWrappable::init(this);
     }
 
@@ skipping 12 matching lines @@
     Path2D(const String& pathData)
         : CanvasPathMethods()
     {
         ScriptWrappable::init(this);
         buildPathFromString(pathData, m_path);
     }
 };
 
 }
 #endif