Enforce LF line endings in the git database.

tests/compiler/dart2js/mixin_typevariable_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 mixin_typevariable_test;
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 import 'type_test_helper.dart';
 import 'package:compiler/src/dart_types.dart';
@@ skipping 138 matching lines @@
     testSupertypes(E2, {A: [_], B: [_, instantiate(A, [_])]});
 
     DartType F1_T = F1.typeVariables.first;
     testSupertypes(F1, {A: [_], B: [_, instantiate(B, [F1_T, _])]});
     DartType F1_superclass_T = F1.superclass.typeVariables.first;
     testSupertypes(F1.superclass, {A: [_], B: [_, instantiate(B, [F1_superclass_T, _])]});
     DartType F2_T = F2.typeVariables.first;
     testSupertypes(F2, {A: [_], B: [_, instantiate(B, [F2_T, _])]});
   }));
 }