Enforce LF line endings in the git database.

tests/compiler/dart2js/mirrors_mixin_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.
 
 library mirrors_mixin_test;
 
 import 'package:expect/expect.dart';
 import 'package:async_helper/async_helper.dart';
 import 'mirror_system_helper.dart';
 
@@ skipping 220 matching lines @@
     Expect.isTrue(isSameDeclarationList([M2, M1], getAppliedMixins(H)));
     Expect.isTrue(isSameDeclarationSet([A, M1], getExplicitInterfaces(H)));
 
     // class H2 extends H {}
     var H2 = library.declarations[#H2];
     Expect.isTrue(isSameDeclaration(H, getSuperclass(H2)));
     Expect.isTrue(getAppliedMixins(H2).isEmpty);
     Expect.isTrue(getExplicitInterfaces(H2).isEmpty);
   }));
 }