Enforce LF line endings in the git database.

tests/compiler/dart2js/warnings_checker.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.
 
 // Test that dart2js produces the expected static type warnings to ensures that
 // the analyzer and dart2js agrees on the tests.
 
 import 'dart:async';
 import 'dart:io';
 import 'package:expect/expect.dart';
@@ skipping 63 matching lines @@
             print('$uri [${lineNo+1}]: Missing static type warning.');
             print(line);
           }
         }
       }
     });
   }).then((_) {
     Expect.isFalse(warningsMismatch);
   }));
 }