Fixes in dart2js parser to be able to parse files without the diet-parser

pkg/compiler/lib/src/parser/element_listener.dart

Index: pkg/compiler/lib/src/parser/element_listener.dart
diff --git a/pkg/compiler/lib/src/parser/element_listener.dart b/pkg/compiler/lib/src/parser/element_listener.dart
index e5904f02085c87adbabbb9e1f9d8526cde44bea4..75cd0e9bb0a8391b07716de5186cb5c6d6c7db32 100644
--- a/pkg/compiler/lib/src/parser/element_listener.dart
+++ b/pkg/compiler/lib/src/parser/element_listener.dart
@@ -731,19 +731,7 @@ class ElementListener extends Listener {
     beginMember(token);
   }
 
-  void endFields(fieldCount, start, token) {
-    memberErrors = memberErrors.tail;
-  }
-
-  void endMethod(getOrSet, start, token) {
-    memberErrors = memberErrors.tail;
-  }
-
-  void beginFactoryMethod(Token token) {
-    memberErrors = memberErrors.prepend(false);
-  }
-
-  void endFactoryMethod(Token beginToken, Token endToken) {
+  void endMember() {
     memberErrors = memberErrors.tail;
   }