Use symbols when looking up fields in a class

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 "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 4776 matching lines @@
 
   // Allocate the immutable array containing the enumeration values.
   // The actual enum instance values will be patched in later.
   const Array& values_array = Array::Handle(Z, Array::New(i, Heap::kOld));
   values_field.SetStaticValue(values_array, true);
   values_field.RecordStore(values_array);
 
   // Create a static field that contains the list of enumeration names.
   // Clone the _enum_names field from the helper class.
   Field& names_field = Field::Handle(Z,
-      helper_class.LookupStaticField(Symbols::_EnumNames()));
+      helper_class.LookupStaticFieldAllowPrivate(Symbols::_EnumNames()));
   ASSERT(!names_field.IsNull());
   names_field = names_field.Clone(cls);
   enum_members.AddField(names_field);
   const Array& names_array = Array::Handle(Array::MakeArray(enum_names));
   names_field.SetStaticValue(names_array, true);
   names_field.RecordStore(names_array);
 
   // Clone the toString() function from the helper class.
   Function& to_string_func = Function::Handle(Z,
       helper_class.LookupDynamicFunctionAllowPrivate(Symbols::toString()));
@@ skipping 9665 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME