[Sync] Add support for sync Persistence Errors

chrome/browser/sync/glue/favicon_cache.cc

 // Copyright 2013 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/sync/glue/favicon_cache.h"
 
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
@@ skipping 308 matching lines @@
   }
   return data_list;
 }
 
 syncer::SyncError FaviconCache::ProcessSyncChanges(
     const tracked_objects::Location& from_here,
     const syncer::SyncChangeList& change_list) {
   if (!favicon_images_sync_processor_.get() ||
       !favicon_tracking_sync_processor_.get()) {
     return syncer::SyncError(FROM_HERE,
+                             syncer::SyncError::DATATYPE_ERROR,
                              "One or both favicon types disabled.",
                              change_list[0].sync_data().GetDataType());
   }
 
   syncer::SyncChangeList new_changes;
   syncer::SyncError error;
   syncer::ModelType type = syncer::UNSPECIFIED;
   for (syncer::SyncChangeList::const_iterator iter = change_list.begin();
       iter != change_list.end(); ++iter) {
     type = iter->sync_data().GetDataType();
@@ skipping 681 matching lines @@
 
 size_t FaviconCache::NumFaviconsForTest() const {
   return synced_favicons_.size();
 }
 
 size_t FaviconCache::NumTasksForTest() const {
   return page_task_map_.size();
 }
 
 }  // namespace browser_sync