All strong mode cleaning of dart2js.

tests/compiler/dart2js/analyze_test_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.analyze_test.test;
 
 import 'dart:io';
 
 import 'package:async_helper/async_helper.dart';
-import 'package:compiler/src/apiimpl.dart' show CompilerImpl;
 import 'package:compiler/src/commandline_options.dart';
-import 'package:compiler/src/diagnostics/messages.dart' show MessageKind;
 import 'package:compiler/src/filenames.dart' show nativeToUriPath;
 
 import 'analyze_helper.dart';
-import 'memory_compiler.dart';
 
 /**
  * Map of white-listed warnings and errors.
  *
  * Use an identifiable suffix of the file uri as key. Use a fixed substring of
  * the error/warning message in the list of white-listings for each file.
  */
 // TODO(johnniwinther): Support canonical URIs as keys.
-const Map<String, List/*<String|MessageKind>*/ > WHITE_LIST = const {
+const Map<String, List /* <String|MessageKind> */ > WHITE_LIST = const {
   "/test/lib/src/util/": const [
     "Library 'package:async/async.dart' doesn't export a "
         "'ForkableStream' declaration.",
   ],
   "pkg/kernel/lib/transformations/closure/": const [
     "Duplicated library name 'kernel.transformations.closure.converter'",
   ],
 };
 
 const List<String> SKIP_LIST = const <String>[
@@ skipping 59 matching lines @@
   }
 
   asyncTest(() async {
     if (uriList.isEmpty) {
       uriList = computeInputUris(filter: filter);
     }
     await analyze(uriList, WHITE_LIST,
         mode: AnalysisMode.URI, options: options);
   });
 }