[Sync] Add support for sync Persistence Errors

chrome/browser/prefs/pref_model_associator.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/prefs/pref_model_associator.h"
 
 #include "base/auto_reset.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/location.h"
@@ skipping 330 matching lines @@
     current_data.push_back(sync_data);
   }
   return current_data;
 }
 
 syncer::SyncError PrefModelAssociator::ProcessSyncChanges(
     const tracked_objects::Location& from_here,
     const syncer::SyncChangeList& change_list) {
   if (!models_associated_) {
     syncer::SyncError error(FROM_HERE,
-                    "Models not yet associated.",
-                    PREFERENCES);
+                            syncer::SyncError::DATATYPE_ERROR,
+                            "Models not yet associated.",
+                            PREFERENCES);
     return error;
   }
   base::AutoReset<bool> processing_changes(&processing_syncer_changes_, true);
   syncer::SyncChangeList::const_iterator iter;
   for (iter = change_list.begin(); iter != change_list.end(); ++iter) {
     DCHECK_EQ(type_, iter->sync_data().GetDataType());
 
     std::string name;
     const sync_pb::PreferenceSpecifics& pref_specifics =
         GetSpecifics(iter->sync_data());
@@ skipping 118 matching lines @@
   }
 
   syncer::SyncError error =
       sync_processor_->ProcessSyncChanges(FROM_HERE, changes);
 }
 
 void PrefModelAssociator::SetPrefService(PrefServiceSyncable* pref_service) {
   DCHECK(pref_service_ == NULL);
   pref_service_ = pref_service;
 }