Fix some tests and exclude others from CRLF rewriting.

tests/lib/convert/json_pretty_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.
 
+// Note: This test relies on LF line endings in the source file.
+
 library json_pretty_test;
 
 import 'dart:convert';
 
 import "package:expect/expect.dart";
 
 void _testIndentWithNullChar() {
   var encoder = const JsonEncoder.withIndent('\x00');
   var encoded = encoder.convert([[],[[]]]);
   Expect.equals("[\n\x00[],\n\x00[\n\x00\x00[]\n\x00]\n]", encoded);
@@ skipping 90 matching lines @@
 
   var compactOutput = JSON.encode(object);
 
   encoder = const JsonEncoder.withIndent(null);
   Expect.equals(compactOutput, encoder.convert(object));
 
   var prettyDecoded = JSON.decode(prettyOutput);
 
   Expect.equals(compactOutput, JSON.encode(prettyDecoded));
 }