Support new getter syntax.

dart/lib/compiler/implementation/scanner/listener.dart

Index: dart/lib/compiler/implementation/scanner/listener.dart
diff --git a/dart/lib/compiler/implementation/scanner/listener.dart b/dart/lib/compiler/implementation/scanner/listener.dart
index 54d68f9e7e892626ee5cadaa9b3a0b5e34edfadb..ad888baf8ea3c02db4b460170cb371c143059fc0 100644
--- a/dart/lib/compiler/implementation/scanner/listener.dart
+++ b/dart/lib/compiler/implementation/scanner/listener.dart
@@ -76,6 +76,9 @@ class Listener {
   void endFormalParameter(Token token, Token thisKeyword) {
   }
 
+  void handleNoFormalParameters(Token token) {
+  }
+
   void beginFormalParameters(Token token) {
   }
 
@@ -990,6 +993,10 @@ class NodeListener extends ElementListener {
     pushNode(makeNodeList(count, beginToken, endToken, ","));
   }
 
+  void handleNoFormalParameters(Token token) {
+    pushNode(null);
+  }
+
   void endArguments(int count, Token beginToken, Token endToken) {
     pushNode(makeNodeList(count, beginToken, endToken, ","));
   }