FYI: Control Data + Per-Device Metadata

sync/engine/sync_scheduler_impl.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 "sync/engine/sync_scheduler_impl.h"
 
 #include <algorithm>
 #include <cstring>
 
 #include "base/bind.h"
@@ skipping 289 matching lines @@
 // Helper to extract the routing info and workers corresponding to types in
 // |types| from |current_routes| and |current_workers|.
 void BuildModelSafeParams(
     const ModelTypeSet& types_to_download,
     const ModelSafeRoutingInfo& current_routes,
     const std::vector<ModelSafeWorker*>& current_workers,
     ModelSafeRoutingInfo* result_routes,
     std::vector<ModelSafeWorker*>* result_workers) {
   std::set<ModelSafeGroup> active_groups;
   active_groups.insert(GROUP_PASSIVE);
+  active_groups.insert(GROUP_CONTROL);
   for (ModelTypeSet::Iterator iter = types_to_download.First(); iter.Good();
        iter.Inc()) {
     ModelType type = iter.Get();
     ModelSafeRoutingInfo::const_iterator route = current_routes.find(type);
     DCHECK(route != current_routes.end());
     ModelSafeGroup group = route->second;
     (*result_routes)[type] = group;
     active_groups.insert(group);
   }
 
@@ skipping 827 matching lines @@
 
 #undef SDVLOG_LOC
 
 #undef SDVLOG
 
 #undef SLOG
 
 #undef ENUM_CASE
 
 }  // namespace syncer