Cull autofill entries older than 60 days.

chrome/browser/webdata/autocomplete_syncable_service.h

 // Copyright (c) 2011 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.
 #ifndef CHROME_BROWSER_WEBDATA_AUTOCOMPLETE_SYNCABLE_SERVICE_H_
 #define CHROME_BROWSER_WEBDATA_AUTOCOMPLETE_SYNCABLE_SERVICE_H_
 #pragma once
 
 #include <map>
+#include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "chrome/browser/sync/api/sync_change.h"
 #include "chrome/browser/sync/api/sync_data.h"
 #include "chrome/browser/sync/api/sync_error.h"
@@ skipping 92 matching lines @@
 
   static std::string KeyToTag(const std::string& name,
                               const std::string& value);
 
   // For unit-tests.
   AutocompleteSyncableService();
   void set_sync_processor(SyncChangeProcessor* sync_processor) {
     sync_processor_.reset(sync_processor);
   }
 
+  // Ignore deletions of the following keys as they were never synced.
+  std::set<AutofillKey> keys_to_ignore_;
+
   // Lifetime of AutocompleteSyncableService object is shorter than
   // |web_data_service_| passed to it.
   WebDataService* web_data_service_;
   content::NotificationRegistrar notification_registrar_;
 
   // We receive ownership of |sync_processor_| in MergeDataAndStartSyncing() and
   // destroy it in StopSyncing().
   scoped_ptr<SyncChangeProcessor> sync_processor_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteSyncableService);
 };
 
 #endif  // CHROME_BROWSER_WEBDATA_AUTOCOMPLETE_SYNCABLE_SERVICE_H_