Rename elements after sorting.

tests/compiler/dart2js/unparser_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('dart:uri');
 #import('parser_helper.dart');
 #import('mock_compiler.dart');
 #import("../../../lib/compiler/compiler.dart");
 #import("../../../lib/compiler/implementation/dart_backend/dart_backend.dart");
 #import("../../../lib/compiler/implementation/elements/elements.dart");
@@ skipping 371 matching lines @@
   b.foo();
   var GREATVAR = b.myliba;
   b.mylist;
   a = getA();
   topfoo();
   mylib.topfoo();
 }
 ''';
   var expectedResult =
     'topfoo(){}'
-    'class p_A{foo(){}}'
+    'class A{foo(){}}'
     'p_topfoo(){var x=5;}'
-    'class A{num foo(){}A.fromFoo(){}p_A myliba;List<A> mylist;}'
-    'p_A getA()=> null;'
-    'main(){var a=new p_A(); a.foo(); var b=new A.fromFoo(); b.foo(); var GREATVAR=b.myliba; b.mylist; a=getA(); p_topfoo(); topfoo();}';
+    'class p_A{num foo(){}p_A.fromFoo(){}A myliba;List<p_A> mylist;}'
+    'A getA()=> null;'
+    'main(){var a=new A(); a.foo(); var b=new p_A.fromFoo(); b.foo(); var GREATVAR=b.myliba; b.mylist; a=getA(); p_topfoo(); topfoo();}';
   testDart2DartWithLibrary(mainSrc, librarySrc,
       (String result) { Expect.equals(expectedResult, result); });
 }
 
 testDefaultClassWithArgs() {
   testDart2Dart('main(){var result=new IA<String>();}'
       'interface IA<T> default A<T extends Object>{IA();}'
       'class A<T extends Object> implements IA<T>{factory A(){}}');
 }
 
@@ skipping 94 matching lines @@
   //testConflictSendsRename();
   testNoConflictSendsRename();
   testConflictLibraryClassRename();
   testDefaultClassWithArgs();
   testClassExtendsWithArgs();
   testStaticInvocation();
   testLibraryGetSet();
   testFieldTypeOutput();
   testDefaultClassNamePlaceholder();
 }