Add handleNoVariableInitializer event.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

 // Copyright (c) 2016, 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.
 
 library fasta.body_builder;
 
 import 'package:front_end/src/fasta/parser/parser.dart' show
     FormalParameterType,
     optional;
 
@@ skipping 861 matching lines @@
   @override
   void endVariableInitializer(Token assignmentOperator) {
     debugEvent("VariableInitializer");
     assert(assignmentOperator.stringValue == "=");
     Expression initializer = popForValue();
     Identifier identifier = pop();
     push(new VariableDeclaration(identifier.name, initializer: initializer));
   }
 
   @override
+  void handleNoVariableInitializer(Token token) {
+    debugEvent("NoVariableInitializer");
+  }
+
+  @override
   void endFieldInitializer(Token assignmentOperator) {
     debugEvent("FieldInitializer");
     assert(assignmentOperator.stringValue == "=");
     push(popForValue());
   }
 
   @override
   void handleNoFieldInitializer(Token token) {
     debugEvent("NoFieldInitializer");
     push(NullValue.FieldInitializer);
@@ skipping 1782 matching lines @@
   } else if (node is TypeDeclarationBuilder) {
     return node.name;
   } else if (node is PrefixBuilder) {
     return node.name;
   } else if (node is ThisPropertyAccessor) {
     return node.name.name;
   } else {
     return internalError("Unhandled: ${node.runtimeType}");
   }
 }