Add ClosureRepresentationInfo, the new public face of ClosureClassMap

tests/compiler/dart2js/equivalence/check_helpers.dart

 // Copyright (c) 2017, 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.
 
 /// General equivalence test functions.
 
 library dart2js.equivalence.helpers;
 
 import 'package:compiler/src/constants/expressions.dart';
 import 'package:compiler/src/constants/values.dart';
-import 'package:compiler/src/elements/elements.dart';
 import 'package:compiler/src/elements/entities.dart';
 import 'package:compiler/src/elements/resolution_types.dart';
 import 'package:compiler/src/elements/types.dart';
 import 'package:compiler/src/serialization/equivalence.dart';
 import 'package:expect/expect.dart';
 
 Check currentCheck;
 
 class Check {
   final Check parent;
@@ skipping 220 matching lines @@
         map2[pair[1]], sameValue);
   }
   return true;
 }
 
 /// Checks the equivalence of the identity (but not properties) of [element1]
 /// and [element2].
 ///
 /// Uses [object1], [object2] and [property] to provide context for failures.
 bool checkElementIdentities(Object object1, Object object2, String property,
-    Element element1, Element element2) {
+    Entity element1, Entity element2) {
   if (identical(element1, element2)) return true;
   return check(
       object1, object2, property, element1, element2, areElementsEquivalent);
 }
 
 /// Checks the pair-wise equivalence of the identity (but not properties) of the
 /// elements in [list] and [list2].
 ///
 /// Uses [object1], [object2] and [property] to provide context for failures.
 bool checkElementListIdentities(Object object1, Object object2, String property,
-    Iterable<Element> list1, Iterable<Element> list2) {
+    Iterable<Entity> list1, Iterable<Entity> list2) {
   return checkListEquivalence(
       object1, object2, property, list1, list2, checkElementIdentities);
 }
 
 /// Checks the equivalence of [type1] and [type2].
 ///
 /// Uses [object1], [object2] and [property] to provide context for failures.
 bool checkTypes(Object object1, Object object2, String property,
     ResolutionDartType type1, ResolutionDartType type2) {
   if (identical(type1, type2)) return true;
@@ skipping 204 matching lines @@
         (mismatch.isNotEmpty && failOnMismatch) ||
         remaining.isNotEmpty) {
       Expect.fail(message);
     } else {
       print(message);
     }
   } else if (verbose) {
     print(message);
   }
 }