Store ResolvedAst on AstElement

tests/compiler/dart2js/serialization/resolved_ast_test.dart

 // Copyright (c) 2016, 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_resolved_ast_test;
 
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
 import 'package:compiler/src/commandline_options.dart';
+import 'package:compiler/src/common.dart';
 import 'package:compiler/src/common/backend_api.dart';
 import 'package:compiler/src/common/names.dart';
 import 'package:compiler/src/compiler.dart';
 import 'package:compiler/src/elements/elements.dart';
 import 'package:compiler/src/filenames.dart';
 import 'package:compiler/src/serialization/equivalence.dart';
 import '../memory_compiler.dart';
 import 'helper.dart';
 import 'test_data.dart';
 import 'test_helper.dart';
@@ skipping 50 matching lines @@
       },
       checkResolvedAsts,
       verbose: verbose);
 }
 
 
 /// Check equivalence of [impact1] and [impact2].
 void checkResolvedAsts(Compiler compiler1, Element member1,
                        Compiler compiler2, Element member2,
                        {bool verbose: false}) {
+  if (!compiler2.serialization.isDeserialized(member2)) {
+    return;
+  }
   ResolvedAst resolvedAst1 = compiler1.resolution.getResolvedAst(member1);
-  ResolvedAst resolvedAst2 =
-      compiler2.serialization.deserializer.getResolvedAst(member2);
+  ResolvedAst resolvedAst2 = compiler2.serialization.getResolvedAst(member2);
 
   if (resolvedAst1 == null || resolvedAst2 == null) return;
 
   if (verbose) {
     print('Checking resolved asts for $member1 vs $member2');
   }
 
   testResolvedAstEquivalence(
       resolvedAst1, resolvedAst2, const CheckStrategy());
 }