Support static/global field initializations.

frog/leg/scanner/class_element_parser.dart

Index: frog/leg/scanner/class_element_parser.dart
diff --git a/frog/leg/scanner/class_element_parser.dart b/frog/leg/scanner/class_element_parser.dart
index 0f75827b6fc957d924ab6f4eeb9cae3030ca88f7..10f169c2489b29d07ecf9306d81b59b1e8bf3f57 100644
--- a/frog/leg/scanner/class_element_parser.dart
+++ b/frog/leg/scanner/class_element_parser.dart
@@ -88,17 +88,4 @@ class MemberListener extends NodeListener {
     buildFieldElements(modifiers, variableDefinitions.definitions,
                        buildFieldElement, beginToken, endToken);
   }
-
-  void endInitializer(Token assignmentOperator) {
-    // TODO(floitsch): Remove this cancel.
-    canceler.cancel("field initializers are not implemented",
-                    token: assignmentOperator);
-    pushNode(null); // Super expects an expression, but
-                    // ClassElementParser just skips expressions.
-    super.endInitializer(assignmentOperator);
-  }
-
-  void endInitializers(int count, Token beginToken, Token endToken) {
-    pushNode(null);
-  }
 }