[builtins] Migrate escape/unescape from uri.js to C++.

src/js/uri.js

Index: src/js/uri.js
diff --git a/src/js/uri.js b/src/js/uri.js
deleted file mode 100644
index 5d4535b4343f107d70b285322c56c95a21cb0893..0000000000000000000000000000000000000000
--- a/src/js/uri.js
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This file contains support for URI manipulations written in
-// JavaScript.
-
-(function(global, utils) {
-
-"use strict";
-
-%CheckIsBootstrapping();
-
-// -------------------------------------------------------------------
-// Define exported functions.
-
-// ECMA-262 - B.2.1.
-function URIEscapeJS(s) {
-  return %URIEscape(s);
-}
-
-// ECMA-262 - B.2.2.
-function URIUnescapeJS(s) {
-  return %URIUnescape(s);
-}
-
-// -------------------------------------------------------------------
-// Install exported functions.
-
-// Set up non-enumerable URI functions on the global object and set
-// their names.
-utils.InstallFunctions(global, DONT_ENUM, [
-  "escape", URIEscapeJS,
-  "unescape", URIUnescapeJS
-]);
-
-})