Remove Compiler access from ResolutionEnqueuer

tests/compiler/dart2js/serialization/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 dart2js.serialization_helper;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/common/names.dart';
 import 'package:compiler/src/compiler.dart';
 import 'package:compiler/src/elements/elements.dart';
+import 'package:compiler/src/filenames.dart';
 
 import '../memory_compiler.dart';
 import 'test_data.dart';
 
 const String DEFAULT_DATA_FILE_NAME = 'out.data';
 
 class Arguments {
   final String filename;
   final int start;
   final int end;
@@ skipping 40 matching lines @@
     }
     return new Arguments(
         filename: filename,
         start: start,
         end: end,
         verbose: verbose,
         loadSerializedData: loadSerializedData,
         saveSerializedData: saveSerializedData);
   }
 
+  Uri get uri {
+    if (filename != null) {
+      return Uri.base.resolve(nativeToUriPath(filename));
+    }
+    return null;
+  }
+
   Future forEachTest(SerializedData serializedData, List<Test> tests,
       TestFunction testFunction) async {
     Uri entryPoint = Uri.parse('memory:main.dart');
     int first = start ?? 0;
     int last = end ?? tests.length;
 
     for (int index = first; index < last; index++) {
       Test test = TESTS[index];
       List<SerializedData> dataList =
           await preserializeData(serializedData, test);
@@ skipping 212 matching lines @@
   print('$taskTitle: $title');
   print('----------------------------------------------------------------');
   var result = await task();
   stopwatch.stop();
   int elapsedMilliseconds = stopwatch.elapsedMilliseconds;
   print('$taskTitle: $title: ${elapsedMilliseconds}ms');
   measurementResults
       .add(new MeasurementResult(title, taskTitle, elapsedMilliseconds));
   return result;
 }