Incremental parser fix: handle insertion of "final" before field decl.

pkg/analyzer/lib/src/generated/parser.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.parser;
 
 import "dart:math" as math;
@@ skipping 1691 matching lines @@
     }
     return _notAChild(node);
   }
 
   @override
   AstNode visitVariableDeclarationList(VariableDeclarationList node) {
     if (identical(_oldNode, node.documentationComment)) {
       throw new InsufficientContextException();
     } else if (node.metadata.contains(_oldNode)) {
       return _parser.parseAnnotation();
+    } else if (identical(_oldNode, node.type)) {
+      // There is not enough context to know whether we should reparse the type
+      // using parseReturnType() (which allows 'void') or parseTypeName()
+      // (which doesn't).  Note that even though the language disallows
+      // variables of type 'void', the parser sometimes accepts them in the
+      // course of error recovery (e.g. "class C { void v; }"
+      throw new InsufficientContextException();
     } else if (node.variables.contains(_oldNode)) {
       throw new InsufficientContextException();
     }
     return _notAChild(node);
   }
 
   @override
   AstNode visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     if (identical(_oldNode, node.variables)) {
       throw new InsufficientContextException();
@@ skipping 10276 matching lines @@
    * Copy resolution data from one node to another.
    *
    * @param fromNode the node from which resolution information will be copied
    * @param toNode the node to which resolution information will be copied
    */
   static void copyResolutionData(AstNode fromNode, AstNode toNode) {
     ResolutionCopier copier = new ResolutionCopier();
     copier._isEqualNodes(fromNode, toNode);
   }
 }