Enforce LF line endings in the git database.

tests/compiler/dart2js/backend_dart/sexpr2_test.dart

 // Copyright (c) 2014, 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.
 
 /// Unittest test of the CPS ir generated by the dart2dart compiler.
 library dart_backend.sexpr2_test;
 
 import 'package:compiler/src/dart2jslib.dart';
 import 'package:compiler/src/cps_ir/cps_ir_nodes.dart';
 import 'package:compiler/src/cps_ir/cps_ir_nodes_sexpr.dart';
@@ skipping 42 matching lines @@
           element = cls.localLookup(
               elementName.substring(elementName.indexOf('.') + 1));
         } else {
           element = compiler.mainApp.localLookup(elementName);
         }
         checkOutput(elementName, element, output);
       });
     }
   });
 }