Prefix resolution_types with Resolution.

tests/compiler/dart2js/serialization/model_test_helper.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.
 
 library dart2js.serialization_model_test;
 
 import 'dart:async';
 import 'dart:io';
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
@@ skipping 89 matching lines @@
         verbose: verbose);
     checkClosedWorlds(compilerNormal.resolverWorld.closedWorldForTesting,
         compilerDeserialized.resolverWorld.closedWorldForTesting,
         verbose: verbose);
     checkBackendInfo(compilerNormal, compilerDeserialized, verbose: verbose);
   });
 }
 
 void checkResolutionEnqueuers(
     ResolutionEnqueuer enqueuer1, ResolutionEnqueuer enqueuer2,
-    {bool typeEquivalence(DartType a, DartType b): areTypesEquivalent,
+    {bool typeEquivalence(ResolutionDartType a, ResolutionDartType b):
+        areTypesEquivalent,
     bool elementFilter(Element element),
     bool verbose: false}) {
   checkSets(enqueuer1.processedEntities, enqueuer2.processedEntities,
       "Processed element mismatch", areElementsEquivalent,
       elementFilter: elementFilter, verbose: verbose);
 
   ResolutionWorldBuilderImpl worldBuilder1 = enqueuer1.universe;
   ResolutionWorldBuilderImpl worldBuilder2 = enqueuer2.universe;
 
   checkMaps(
@@ skipping 296 matching lines @@
       outputUnit1.isMainOutput, outputUnit2.isMainOutput);
   checkSetEquivalence(
       outputUnit1,
       outputUnit2,
       'OutputUnit.imports $message',
       outputUnit1.imports,
       outputUnit2.imports,
       (a, b) => areElementsEquivalent(a.declaration, b.declaration));
 }
 
-bool areInstantiationInfosEquivalent(InstantiationInfo info1,
-    InstantiationInfo info2, bool typeEquivalence(DartType a, DartType b)) {
+bool areInstantiationInfosEquivalent(
+    InstantiationInfo info1,
+    InstantiationInfo info2,
+    bool typeEquivalence(ResolutionDartType a, ResolutionDartType b)) {
   checkMaps(
       info1.instantiationMap,
       info2.instantiationMap,
       'instantiationMap of\n   '
       '${info1.instantiationMap}\nvs ${info2.instantiationMap}',
       areElementsEquivalent,
       (a, b) => areSetsEquivalent(
           a, b, (a, b) => areInstancesEquivalent(a, b, typeEquivalence)));
   return true;
 }
 
 bool areInstancesEquivalent(Instance instance1, Instance instance2,
-    bool typeEquivalence(DartType a, DartType b)) {
+    bool typeEquivalence(ResolutionDartType a, ResolutionDartType b)) {
   return typeEquivalence(instance1.type, instance2.type) &&
       instance1.kind == instance2.kind &&
       instance1.isRedirection == instance2.isRedirection;
 }