[Sync] Add support for sync Persistence Errors

chrome/browser/sync/glue/password_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/sync/glue/password_model_associator.h"
 
 #include <set>
 
 #include "base/location.h"
 #include "base/metrics/histogram.h"
@@ skipping 53 matching lines @@
   if (!password_store_->FillAutofillableLogins(&passwords) ||
       !password_store_->FillBlacklistLogins(&passwords)) {
     STLDeleteElements(&passwords);
 
     // Password store often fails to load passwords. Track failures with UMA.
     // (http://crbug.com/249000)
     UMA_HISTOGRAM_ENUMERATION("Sync.LocalDataFailedToLoad",
                               ModelTypeToHistogramInt(syncer::PASSWORDS),
                               syncer::MODEL_TYPE_COUNT);
     return syncer::SyncError(FROM_HERE,
+                             syncer::SyncError::DATATYPE_ERROR,
                              "Could not get the password entries.",
                              model_type());
   }
 
   std::set<std::string> current_passwords;
   PasswordVector new_passwords;
   PasswordVector updated_passwords;
   {
     syncer::WriteTransaction trans(FROM_HERE, sync_service_->GetUserShare());
     syncer::ReadNode password_root(&trans);
@@ skipping 359 matching lines @@
     const std::string& password_element,
     const std::string& signon_realm) {
   return net::EscapePath(origin_url) + "|" +
          net::EscapePath(username_element) + "|" +
          net::EscapePath(username_value) + "|" +
          net::EscapePath(password_element) + "|" +
          net::EscapePath(signon_realm);
 }
 
 }  // namespace browser_sync