Use memory compiler in compiler_helper.dart.

tests/compiler/dart2js/type_test_helper.dart

 // Copyright (c) 2013, 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 type_test_helper;
 
 import 'dart:async';
 import 'package:expect/expect.dart';
 import 'compiler_helper.dart' as mock;
 import 'memory_compiler.dart' as memory;
+import 'package:compiler/src/commandline_options.dart';
 import 'package:compiler/src/dart_types.dart';
 import 'package:compiler/src/compiler.dart'
     show Compiler;
 import 'package:compiler/src/elements/elements.dart'
     show Element,
          TypeDeclarationElement,
          ClassElement;
 
 GenericType instantiate(TypeDeclarationElement element,
                         List<DartType> arguments) {
@@ skipping 37 matching lines @@
       getErrors = () => mockCompiler.errors;
       getWarnings = () => mockCompiler.warnings;
       compiler = mockCompiler;
     } else {
       memory.DiagnosticCollector collector = new memory.DiagnosticCollector();
       uri = Uri.parse('memory:main.dart');
       compiler = memory.compilerFor(
           memorySourceFiles: {'main.dart': source},
           diagnosticHandler: collector,
           options: stopAfterTypeInference
-              ? [] : ['--analyze-all', '--analyze-only']);
+              ? [] : [Flags.analyzeAll, Flags.analyzeOnly]);
       getErrors = () => collector.errors;
       getWarnings = () => collector.warnings;
     }
     compiler.stopAfterTypeInference = stopAfterTypeInference;
     return compiler.runCompiler(uri).then((_) {
       if (expectNoErrors || expectNoWarningsOrErrors) {
         var errors = getErrors();
         Expect.isTrue(errors.isEmpty,
             'Unexpected errors: ${errors}');
       }
@@ skipping 61 matching lines @@
       namedParameters.forEach((String name, DartType type) {
         namedParameterNames.add(name);
         namedParameterTypes.add(type);
       });
     }
     return new FunctionType.synthesized(
         returnType, parameters, optionalParameters,
         namedParameterNames, namedParameterTypes);
   }
 }