Reland c9e1b88 and 56726fc with a DDC fix.

pkg/analyzer/test/src/summary/resynthesize_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 analyzer.test.src.summary.resynthesize_ast_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/dart/element/element.dart';
@@ skipping 801 matching lines @@
         .toSet();
 
     Map<String, LinkedLibrary> linkedSummaries = link(
         nonSdkLibraryUris,
         getDependency,
         getUnit,
         context.declaredVariables.get,
         context.analysisOptions.strongMode);
 
     return new TestSummaryResynthesizer(
-        null,
         context,
         new Map<String, UnlinkedUnit>()
           ..addAll(SerializedMockSdk.instance.uriToUnlinkedUnit)
           ..addAll(unlinkedSummaries),
         new Map<String, LinkedLibrary>()
           ..addAll(SerializedMockSdk.instance.uriToLinkedLibrary)
           ..addAll(linkedSummaries),
         allowMissingFiles);
   }
 
@@ skipping 109 matching lines @@
   }
 
   @override
   DartSdk createDartSdk() => AbstractContextTest.SHARED_MOCK_SDK;
 
   @override
   TestSummaryResynthesizer encodeDecodeLibrarySource(Source source) {
     return _encodeLibrary(source);
   }
 }