Add new argument to compiler.

tests/compiler/dart2js/deferred_load_graph_segmentation_test.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.
 
 // Test of the graph segmentation algorithm used by deferred loading
 // to determine which elements can be deferred and which libraries
 // much be included in the initial download (loaded eagerly).
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 import 'memory_source_file_helper.dart';
 
 import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart'
        as dart2js;
 
 void main() {
   Uri script = currentDirectory.resolveUri(Platform.script);
   Uri libraryRoot = script.resolve('../../../sdk/');
   Uri packageRoot = script.resolve('./packages/');
 
   var provider = new MemorySourceFileProvider(MEMORY_SOURCE_FILES);
   var handler = new FormattingDiagnosticHandler(provider);
 
   Compiler compiler = new Compiler(provider.readStringFromUri,
                                    (name, extension) => null,
                                    handler.diagnosticHandler,
                                    libraryRoot,
                                    packageRoot,
-                                   ['--analyze-only']);
+                                   ['--analyze-only'],
+                                   {});
   asyncTest(() => compiler.run(Uri.parse('memory:main.dart')).then((_) {
     var main = compiler.mainApp.find(dart2js.Compiler.MAIN);
     Expect.isNotNull(main, "Could not find 'main'");
     compiler.deferredLoadTask.onResolutionComplete(main);
 
     var deferredClasses =
         compiler.deferredLoadTask.allDeferredElements.where((e) => e.isClass())
         .toSet();
 
     var dateTime = deferredClasses.where((e) => e.name == 'DateTime').single;
@@ skipping 28 matching lines @@
 class MyClass {
   const MyClass();
 
   foo(x) {
     new DateTime.now();
     return (x - 3) ~/ 2;
   }
 }
 """,
 };