Fix try (again!)

tests/compiler/dart2js/serialization_test.dart

 // Copyright (c) 2015, 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_test;
 
 import 'dart:io';
 import 'memory_compiler.dart';
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/constants/constructors.dart';
@@ skipping 450 matching lines @@
 
   @override
   void visitElement(Element e, Element arg) {
     throw new UnsupportedError("Unsupported element $e");
   }
 
   @override
   void visitLibraryElement(LibraryElement element1, LibraryElement element2) {
     checkElementIdentities(null, null, null, element1, element2);
     check(element1, element2, 'name', element1.name, element2.name);
-    check(element1, element2, 'getLibraryName',
+    check(element1, element2, 'libraryName',

[Johnni Winther, 2015/09/15 08:28:30]

Just found this search for uses of 'getLibraryName'.

           element1.libraryName, element2.libraryName);
     visitMembers(element1, element2);
     visit(element1.entryCompilationUnit, element2.entryCompilationUnit);
     checkElementLists(
         element1, element2, 'compilationUnits',
         element1.compilationUnits.toList(),
         element2.compilationUnits.toList());
 
     checkElementListIdentities(
         element1, element2, 'imports', element1.imports, element2.imports);
@@ skipping 606 matching lines @@
         exp1, exp2, 'expression',
         exp1.expression, exp2.expression);
   }
 
   @override
   visitDeferred(DeferredConstantExpression exp1,
                 DeferredConstantExpression exp2) {
     // TODO: implement visitDeferred
   }
 }