Avoid name clashes of builtins and runtime functions.

src/uri.js

 // 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.
 
 "use strict";
 
 // This file relies on the fact that the following declaration has been made
 // in runtime.js:
 // var $Array = global.Array;
 
@@ skipping 385 matching lines @@
       // '0'..'9', 'A'..'F' and 'a' .. 'f'.
     } else {
       return false;
     }
   }
   return true;
 }
 
 
 // ECMA-262 - B.2.1.
-function URIEscape(str) {
+function URIEscapeJS(str) {
   var s = ToString(str);
   return %URIEscape(s);
 }
 
 
 // ECMA-262 - B.2.2.
-function URIUnescape(str) {
+function URIUnescapeJS(str) {
   var s = ToString(str);
   return %URIUnescape(s);
 }
 
 
 // -------------------------------------------------------------------
 
 function SetUpUri() {
   %CheckIsBootstrapping();
 
   // Set up non-enumerable URI functions on the global object and set
   // their names.
   InstallFunctions(global, DONT_ENUM, $Array(
-    "escape", URIEscape,
-    "unescape", URIUnescape,
+    "escape", URIEscapeJS,
+    "unescape", URIUnescapeJS,
     "decodeURI", URIDecode,
     "decodeURIComponent", URIDecodeComponent,
     "encodeURI", URIEncode,
     "encodeURIComponent", URIEncodeComponent
   ));
 }
 
 SetUpUri();