Clear 'referenceMap' before summarizing a new unit.

pkg/analyzer/test/src/summary/test_all.dart

Index: pkg/analyzer/test/src/summary/test_all.dart
diff --git a/pkg/analyzer/test/src/context/test_all.dart b/pkg/analyzer/test/src/summary/test_all.dart
similarity index 62%
copy from pkg/analyzer/test/src/context/test_all.dart
copy to pkg/analyzer/test/src/summary/test_all.dart
index 301b13c05381d65c1a8a93bcb46c4f3717d5e308..189d00f02c0be20a8366c397aea2eaccb82eeab0 100644
--- a/pkg/analyzer/test/src/context/test_all.dart
+++ b/pkg/analyzer/test/src/summary/test_all.dart
@@ -2,19 +2,19 @@
 // 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 analyzer.test.src.context.test_all;
+library test.src.serialization.test_all;
 
 import 'package:unittest/unittest.dart';
 
 import '../../utils.dart';
-import 'cache_test.dart' as cache_test;
-import 'context_test.dart' as context_test;
+import 'resynthesize_test.dart' as resynthesize_test;
+import 'summary_test.dart' as summary_test;
 
 /// Utility for manually running all tests.
 main() {
   initializeTestEnvironment();
-  group('context tests', () {
-    cache_test.main();
-    context_test.main();
+  group('summary tests', () {
+    resynthesize_test.main();
+    summary_test.main();
   });
 }