Support static/global field initializations.

frog/leg/scanner/class_element_parser.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class ClassElementParser extends PartialParser {
   ClassElementParser(Listener listener) : super(listener);
 
   Token parseClassBody(Token token) => fullParseClassBody(token);
 }
 
@@ skipping 70 matching lines @@
     Modifiers modifiers = variableDefinitions.modifiers;
     pushNode(null);
     void buildFieldElement(SourceString name, Node node, Element fields) {
       Element element = new VariableElement(
           name, node, fields, ElementKind.FIELD, enclosingElement);
       enclosingElement.addMember(element);
     }
     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);
-  }
 }