Minor adjustments to vm patch files

runtime/lib/object_patch.dart

 // Copyright (c) 2012, 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.
 
 @patch class Object {
 
   // The VM has its own implementation of equals.
   @patch bool operator ==(other) native "Object_equals";
 
   // Helpers used to implement hashCode. If a hashCode is used, we remember it
@@ skipping 25 matching lines @@
   // A statically dispatched version of Object.toString.
   static String _toString(obj) native "Object_toString";
 
   _noSuchMethod(bool isMethod,
                 String memberName,
                 int type,
                 List arguments,
                 Map<String, dynamic> namedArguments)
       native "Object_noSuchMethod";
 
-  @patch noSuchMethod(Invocation invocation) {
+  @patch dynamic noSuchMethod(Invocation invocation) {

[hausner, 2017/01/27 21:47:56]

This should not be necessary; the type of a function with no explicit return
type is 'dynamic'. 

     return _noSuchMethod(invocation.isMethod,
                          internal.Symbol.getName(invocation.memberName),
                          invocation._type,
                          invocation.positionalArguments,
                          _symbolMapToStringMap(invocation.namedArguments));
   }
 
   @patch Type get runtimeType native "Object_runtimeType";
 
   static bool _haveSameRuntimeType(a, b) native "Object_haveSameRuntimeType";
@@ skipping 19 matching lines @@
   _as(instantiator_type_arguments, type) native "Object_as";
 
   static _symbolMapToStringMap(Map<Symbol, dynamic> map) {
     var result = new Map<String, dynamic>();
     map.forEach((Symbol key, value) {
       result[internal.Symbol.getName(key)] = value;
     });
     return result;
   }
 }