Add --modules=node support

tool/input_sdk/private/classes.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// This library defines the operations that define and manipulate Dart
 /// classes.  Included in this are:
 ///   - Generics
 ///   - Class metadata
 ///   - Extension methods
 ///
@@ skipping 264 matching lines @@
 /// JavaScript class.
 ///
 registerExtension(jsType, dartExtType) => JS('', '''(() => {
   let extProto = $dartExtType.prototype;
   let jsProto = $jsType.prototype;
 
   // Mark the JS type's instances so we can easily check for extensions.
   $assert_(jsProto[$_extensionType] === void 0);
   jsProto[$_extensionType] = extProto;
 
+  // TODO(ochafik): Fix this (DO NOT SUBMIT)
+  //let dartObjProto = require('dart/core').Object.prototype; // \$Object.prototype;

[vsm, 2016/01/26 14:09:41]

Remove?

[ochafik, 2016/01/26 16:27:37]

Done.

   let dartObjProto = $Object.prototype;
   while (extProto !== dartObjProto && extProto !== jsProto) {
     $copyTheseProperties(jsProto, extProto, $getOwnPropertySymbols(extProto));
     extProto = extProto.__proto__;
   }
   let originalSigFn = $getOwnPropertyDescriptor($dartExtType, $_methodSig).get;
   $assert_(originalSigFn);
   $defineMemoizedGetter($jsType, $_methodSig, originalSigFn);
 })()''');
 
@@ skipping 54 matching lines @@
 })()''');
 
 /// Sets the element type of a list literal.
 list(obj, elementType) =>
     JS('', '$setType($obj, ${getGenericClass(JSArray)}($elementType))');
 
 setBaseClass(derived, base) => JS('', '''(() => {
   // Link the extension to the type it's extending as a base class.
   $derived.prototype.__proto__ = $base.prototype;
 })()''');