Strong mode cleaning of many dart2js tests.

tests/compiler/dart2js/analyze_helper.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 analyze_helper;
 
 import 'dart:async';
 import 'dart:io';
 import 'package:compiler/compiler.dart' as api;
 import 'package:compiler/src/apiimpl.dart';
@@ skipping 21 matching lines @@
 // TODO(johnniwinther): Support canonical URIs as keys and message kinds as
 // values.
 
 class CollectingDiagnosticHandler extends FormattingDiagnosticHandler {
   bool hasWarnings = false;
   bool hasHint = false;
   bool hasErrors = false;
   bool lastWasWhitelisted = false;
   bool showWhitelisted = true;
 
-  Map<String, Map<dynamic /*String|MessageKind*/, int>> whiteListMap =
-      new Map<String, Map<dynamic /*String|MessageKind*/, int>>();
+  Map<String, Map<dynamic /* String|MessageKind */, int>> whiteListMap =
+      new Map<String, Map<dynamic /* String|MessageKind */, int>>();
   List<MessageKind> skipList;
   List<CollectedMessage> collectedMessages = <CollectedMessage>[];
 
   CollectingDiagnosticHandler(
-      Map<String, List/*<String|MessageKind>*/ > whiteList,
+      Map<String, List /* <String|MessageKind> */ > whiteList,
       this.skipList,
       SourceFileProvider provider)
       : super(provider) {
-    whiteList.forEach((String file, List/*<String|MessageKind>*/ messageParts) {
-      var useMap = new Map<dynamic /*String|MessageKind*/, int>();
+    whiteList
+        .forEach((String file, List /* <String|MessageKind> */ messageParts) {
+      var useMap = new Map<dynamic /* String|MessageKind */, int>();
       for (var messagePart in messageParts) {
         useMap[messagePart] = 0;
       }
       whiteListMap[file] = useMap;
     });
   }
 
   bool checkResults() {
     bool validWhiteListUse = checkWhiteListUse();
     reportWhiteListUse();
@@ skipping 131 matching lines @@
   /// Analyze all declarations reachable from the entry point.
   TREE_SHAKING,
 }
 
 /// Analyzes the file(s) in [uriList] using the provided [mode] and checks that
 /// no messages (errors, warnings or hints) are emitted.
 ///
 /// Messages can be generally allowed using [skipList] or on a per-file basis
 /// using [whiteList].
 Future analyze(
-    List<Uri> uriList, Map<String, List/*<String|MessageKind>*/ > whiteList,
+    List<Uri> uriList, Map<String, List /* <String|MessageKind> */ > whiteList,
     {AnalysisMode mode: AnalysisMode.ALL,
     CheckResults checkResults,
     List<String> options: const <String>[],
     List<MessageKind> skipList: const <MessageKind>[]}) async {
   String testFileName =
       relativize(Uri.base, Platform.script, Platform.isWindows);
 
   print("""
 
 
@@ skipping 67 matching lines @@
   if (checkResults != null) {
     result = checkResults(compiler, handler);
   } else {
     result = handler.checkResults();
   }
   if (!result) {
     print(MESSAGE);
     exit(1);
   }
 }