Add constructors for JSArray

tests/utils/dummy_compiler_test.dart

 // Copyright (c) 2012, 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.
 // VMOptions=
 // VMOptions=--print-object-histogram
 
 // Smoke test of the dart2js compiler API.
 library dummy_compiler;
 
 import 'dart:async';
@@ skipping 14 matching lines @@
   operator==(other) {}
   get hashCode => throw 'Object.hashCode not implemented.';
 }
 class Type {}
 class bool {}
 class num {}
 class int {}
 class double{}
 class String{}
 class Function{}
-class List {}
+class List<E> {}
 class Map {}
 class Closure {}
 class BoundClosure {}
 class Dynamic_ {}
 class Null {}
 class StackTrace {}
 class LinkedHashMap {}
 identical(a, b) => true;
 getRuntimeTypeInfo(o) {}
 setRuntimeTypeInfo(o, i) {}
 eqNull(a) {}
 eqNullB(a) {}""";
     } else if (uri.path.endsWith('_patch.dart')) {
       source = '';
     } else if (uri.path.endsWith('interceptors.dart')) {
       source = """
 class Interceptor {
   operator==(other) {}
   get hashCode => throw 'Interceptor.hashCode not implemented.';
 }
 class JSIndexable {
   get length;
 }
 class JSMutableIndexable {}
-class JSArray implements JSIndexable {
+class JSArray<E> implements JSIndexable {
+  JSArray() {}
+  factory JSArray.typed(a) => a;
   var removeLast;
   var add;
 }
 class JSMutableArray extends JSArray {}
 class JSFixedArray extends JSMutableArray {}
 class JSExtendableArray extends JSMutableArray {}
 class JSString implements JSIndexable {
   var split;
   var concat;
   operator+(other) {}
@@ skipping 40 matching lines @@
               new Uri(scheme: 'package', path: '/'),
               provider, handler);
   result.then((String code) {
     if (code == null) {
       throw 'Compilation failed';
     }
   }, onError: (e) {
       throw 'Compilation failed';
   }).then(asyncSuccess);
 }