Convert dart_utils.js to input_sdk/lib/_internal/utils.dart (#310)

lib/runtime/dart/_classes.js

 // 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
  */
 
 // TODO(leafp): Consider splitting some of this out.
 dart_library.library('dart/_classes', null, /* Imports */[
 ], /* Lazy Imports */[
+  'dart/_utils',
   'dart/core',
   'dart/_interceptors',
   'dart/_types',
   'dart/_rtti',
-], function(exports, core, _interceptors, types, rtti) {
+], function(exports, dart_utils, core, _interceptors, types, rtti) {
   'use strict';
 
-  const assert = dart_utils.assert;
+  const assert = dart_utils.assert_;
   const copyProperties = dart_utils.copyProperties;
   const copyTheseProperties = dart_utils.copyTheseProperties;
   const defineMemoizedGetter = dart_utils.defineMemoizedGetter;
   const safeGetOwnProperty = dart_utils.safeGetOwnProperty;
   const throwInternalError = dart_utils.throwInternalError;
 
   const defineProperty = Object.defineProperty;
   const getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
   const getOwnPropertySymbols = Object.getOwnPropertySymbols;
 
@@ skipping 376 matching lines @@
   }
   exports.list = list;
 
   function setBaseClass(derived, base) {
     // Link the extension to the type it's extending as a base class.
     derived.prototype.__proto__ = base.prototype;
   }
   exports.setBaseClass = setBaseClass;
 
 });