Implements ES6 String.prototype.normalize method.

test/webkit/fast/js/kde/inbuilt_function_proto.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 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 25 matching lines @@
 shouldBe("Array.prototype.sort.__proto__","Function.prototype");
 shouldBe("Array.prototype.splice.__proto__","Function.prototype");
 shouldBe("Array.prototype.unshift.__proto__","Function.prototype");
 shouldBe("String.prototype.toString.__proto__","Function.prototype");
 shouldBe("String.prototype.valueOf.__proto__","Function.prototype");
 shouldBe("String.prototype.charAt.__proto__","Function.prototype");
 shouldBe("String.prototype.charCodeAt.__proto__","Function.prototype");
 shouldBe("String.prototype.indexOf.__proto__","Function.prototype");
 shouldBe("String.prototype.lastIndexOf.__proto__","Function.prototype");
 shouldBe("String.prototype.match.__proto__","Function.prototype");
+shouldBe("String.prototype.normalize.__proto__","Function.prototype");
 shouldBe("String.prototype.replace.__proto__","Function.prototype");
 shouldBe("String.prototype.search.__proto__","Function.prototype");
 shouldBe("String.prototype.slice.__proto__","Function.prototype");
 shouldBe("String.prototype.split.__proto__","Function.prototype");
 shouldBe("String.prototype.substr.__proto__","Function.prototype");
 shouldBe("String.prototype.substring.__proto__","Function.prototype");
 shouldBe("String.prototype.toLowerCase.__proto__","Function.prototype");
 shouldBe("String.prototype.toUpperCase.__proto__","Function.prototype");
 shouldBe("String.prototype.big.__proto__","Function.prototype");
 shouldBe("String.prototype.small.__proto__","Function.prototype");
@@ skipping 52 matching lines @@
 shouldBe("Date.prototype.setUTCMonth.__proto__","Function.prototype");
 shouldBe("Date.prototype.setFullYear.__proto__","Function.prototype");
 shouldBe("Date.prototype.setUTCFullYear.__proto__","Function.prototype");
 shouldBe("Date.prototype.setYear.__proto__","Function.prototype");
 shouldBe("Date.prototype.getYear.__proto__","Function.prototype");
 shouldBe("Date.prototype.toGMTString.__proto__","Function.prototype");
 shouldBe("RegExp.prototype.exec.__proto__","Function.prototype");
 shouldBe("RegExp.prototype.test.__proto__","Function.prototype");
 shouldBe("RegExp.prototype.toString.__proto__","Function.prototype");
 shouldBe("Error.prototype.toString.__proto__","Function.prototype");