Refactor CompilerOutput

tests/compiler/dart2js/unused_empty_map_test.dart

Index: tests/compiler/dart2js/unused_empty_map_test.dart
diff --git a/tests/compiler/dart2js/unused_empty_map_test.dart b/tests/compiler/dart2js/unused_empty_map_test.dart
index 8ba21680426b27b1f60a0a441e8c8444263cb350..a8ad30aa16e90d2c6cc6e75f266cf34f126ee3be 100644
--- a/tests/compiler/dart2js/unused_empty_map_test.dart
+++ b/tests/compiler/dart2js/unused_empty_map_test.dart
@@ -5,6 +5,7 @@
 // Ensure that unused empty HashMap nodes are dropped from the output.
 
 import 'package:expect/expect.dart';
+import 'package:compiler/compiler_new.dart';
 import 'package:async_helper/async_helper.dart';
 import 'memory_compiler.dart';
 
@@ -25,7 +26,7 @@ main() {
     var result = await runCompiler(
         memorySourceFiles: TEST_SOURCE, outputProvider: collector);
     var compiler = result.compiler;
-    String generated = collector.getOutput('', 'js');
+    String generated = collector.getOutput('', OutputType.js);
     Expect.isFalse(generated.contains(HASHMAP_EMPTY_CONSTRUCTOR));
   });
 }