sync: Consistently refcount ModelSafeWorkers

sync/sessions/sync_session_context.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/sessions/sync_session_context.h"
 
 #include "sync/sessions/debug_info_getter.h"
 #include "sync/util/extensions_activity.h"
 
 namespace syncer {
 namespace sessions {
 
 SyncSessionContext::SyncSessionContext(
     ServerConnectionManager* connection_manager,
     syncable::Directory* directory,
-    const std::vector<ModelSafeWorker*>& workers,
+    const std::vector<scoped_refptr<ModelSafeWorker> >& workers,
     ExtensionsActivity* extensions_activity,
     const std::vector<SyncEngineEventListener*>& listeners,
     DebugInfoGetter* debug_info_getter,
     TrafficRecorder* traffic_recorder,
     bool keystore_encryption_enabled,
     bool client_enabled_pre_commit_update_avoidance,
     const std::string& invalidator_client_id)
     : connection_manager_(connection_manager),
       directory_(directory),
       update_handler_deleter_(&update_handler_map_),
@@ skipping 43 matching lines @@
     update_handler_map_.insert(std::make_pair(type, handler));
 
     SyncDirectoryCommitContributor* contributor =
         new SyncDirectoryCommitContributor(directory(), type);
     commit_contributor_map_.insert(std::make_pair(type, contributor));
   }
 }
 
 }  // namespace sessions
 }  // namespace syncer