Make toString visible on enum classes, as required by proposed spec.

runtime/vm/parser.cc

 // 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.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/ast_transformer.h"
 #include "vm/bootstrap.h"
@@ skipping 4450 matching lines @@
   enum_members.AddField(names_field);
   const Array& names_array = Array::Handle(Array::MakeArray(enum_names));
   names_field.set_value(names_array);
   names_field.RecordStore(names_array);
 
   // Clone the toString() function from the helper class.
   Function& to_string_func = Function::Handle(I,
       helper_class.LookupDynamicFunctionAllowPrivate(Symbols::toString()));
   ASSERT(!to_string_func.IsNull());
   to_string_func = to_string_func.Clone(cls);
-  to_string_func.set_is_visible(false);
   enum_members.AddFunction(to_string_func);
 
   cls.AddFields(enum_members.fields());
   const Array& functions =
       Array::Handle(I, Array::MakeArray(enum_members.functions()));
   cls.SetFunctions(functions);
 }
 
 
 // Add an implicit constructor to the given class.
@@ skipping 7656 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart