Chromium Code Reviews| Index: sdk/lib/core/string_buffer.dart | 
| diff --git a/sdk/lib/core/string_buffer.dart b/sdk/lib/core/string_buffer.dart | 
| index c8d71cca9b4ca80ab057d01701ea33d9ca4fa2a9..50bb51c4249c67031d4d2ce6bb674eac1a8d1c2c 100644 | 
| --- a/sdk/lib/core/string_buffer.dart | 
| +++ b/sdk/lib/core/string_buffer.dart | 
| @@ -33,7 +33,7 @@ class StringBuffer implements StringSink { | 
| for (Object obj in objects) write(obj); | 
| } | 
| - void writeln(Object obj) { | 
| + void writeln([Object obj = ""]) { | 
| write(obj); | 
| write("\n"); | 
| } |