Remove parent from SummaryResynthesizer.

pkg/analyzer/lib/src/summary/package_bundle_reader.dart

 import 'dart:io' as io;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart' show TypeProvider;
 import 'package:analyzer/src/generated/source.dart';
@@ skipping 404 matching lines @@
 }
 
 /**
  * A concrete resynthesizer that serves summaries from given file paths.
  */
 class _FileBasedSummaryResynthesizer extends SummaryResynthesizer {
   final SummaryDataStore _dataStore;
 
   _FileBasedSummaryResynthesizer(AnalysisContext context,
       SourceFactory sourceFactory, bool strongMode, this._dataStore)
-      : super(null, context, sourceFactory, strongMode);
+      : super(context, sourceFactory, strongMode);
 
   @override
   LinkedLibrary getLinkedSummary(String uri) {
     return _dataStore.linkedMap[uri];
   }
 
   @override
   UnlinkedUnit getUnlinkedSummary(String uri) {
     return _dataStore.unlinkedMap[uri];
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     LinkedLibrary linkedLibrary = _dataStore.linkedMap[uri];
     return linkedLibrary != null;
   }
 }