Convert String to a class.

runtime/vm/dart_api_message.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/dart_api_message.h"
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 #include "vm/symbols.h"
 
 namespace dart {
@@ skipping 395 matching lines @@
   if (object_id == kTrueValue) {
     return AllocateDartCObjectBool(true);
   }
   if (object_id == kFalseValue) {
     return AllocateDartCObjectBool(false);
   }
   if (object_id == kDynamicType ||
       object_id == kDoubleType ||
       object_id == kIntType ||
       object_id == kBoolType ||
-      object_id == kStringInterface) {
+      object_id == kStringType) {
     // Always return dynamic type (this is only a marker).
     return &dynamic_type_marker;
   }
   intptr_t index = object_id - kMaxPredefinedObjectIds;
   ASSERT((0 <= index) && (index < backward_references_.length()));
   ASSERT(backward_references_[index]->reference() != NULL);
   return backward_references_[index]->reference();
 }
 
 
@@ skipping 372 matching lines @@
   // Write out all objects that were added to the forward list and have
   // not been serialized yet. These would typically be fields of arrays.
   // NOTE: The forward list might grow as we process the list.
   for (intptr_t i = 0; i < forward_id_; i++) {
     WriteForwardedCObject(forward_list_[i]);
   }
   UnmarkAllCObjects(object);
 }
 
 }  // namespace dart