Update dart2js diagnostics to prepare for filtering.

tests/compiler/dart2js/parser_helper.dart

Index: tests/compiler/dart2js/parser_helper.dart
diff --git a/tests/compiler/dart2js/parser_helper.dart b/tests/compiler/dart2js/parser_helper.dart
index 94c3b5760a4c5fa182f7faf1c35e6d22b8a6face..348cbd2f23cf41af8ea66cb60bd569d316a09feb 100644
--- a/tests/compiler/dart2js/parser_helper.dart
+++ b/tests/compiler/dart2js/parser_helper.dart
@@ -40,7 +40,7 @@ class LoggerCanceler implements DiagnosticListener {
     log(message);
   }
 
-  SourceSpan spanFromSpannable(node, [uri]) {
+  SourceSpan spanFromSpannable(node) {
     throw 'unsupported operation';
   }
 
@@ -52,6 +52,10 @@ class LoggerCanceler implements DiagnosticListener {
     log(new Message(errorCode, arguments, false));
   }
 
+  void reportWarningCode(Spannable node, MessageKind errorCode, [Map arguments]) {

[floitsch, 2014/02/19 14:57:40]

long line.

Why do we need a reportWarningCode?
Shouldn't it be simply reportWarning?

[Johnni Winther, 2014/02/20 09:35:40]

Nice catch. Renamed.

+    log(new Message(errorCode, arguments, false));
+  }
+
   void reportInfo(Spannable node, MessageKind errorCode, [Map arguments]) {
     log(new Message(errorCode, arguments, false));
   }