Clean up leg.dart.

dart/tests/compiler/dart2js/unparser2_test.dart

 // Copyright (c) 2012, 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.
 
-#import("../../../lib/compiler/implementation/scanner/scannerlib.dart");
-#import("../../../lib/compiler/implementation/elements/elements.dart"); // only need CompilationUnitElement
-#import("../../../lib/compiler/implementation/tree/tree.dart");
-#import("../../../lib/compiler/implementation/leg.dart"); // only need DiagnosticListener & Script
+import "../../../lib/compiler/implementation/scanner/scannerlib.dart";
+import "../../../lib/compiler/implementation/elements/elements.dart" show CompilationUnitElement, LibraryElement;
+import "../../../lib/compiler/implementation/tree/tree.dart";
+import "../../../lib/compiler/implementation/dart2jslib.dart" show DiagnosticListener, Script;
 
 main() {
   testClassDef();
   testClass1Field();
   testClass2Fields();
   testClass1Field1Method();
   testClass1Field2Method();
   testClassDefTypeParam();
 }
 
@@ skipping 54 matching lines @@
   }
   void internalErrorOnElement(Element element, String message) {
     throw message;
   }
   void internalError(String message,
                      {Node node, Token token, dynamic instruction,
                       Element element}) {
     throw message;
   }
 }