Make SyncBackendRegistrar aware of loaded data

sync/sessions/sync_session_context.h

 // 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.
 
 // SyncSessionContext encapsulates the contextual information and engine
 // components specific to a SyncSession. A context is accessible via
 // a SyncSession so that session SyncerCommands and parts of the engine have
 // a convenient way to access other parts. In this way it can be thought of as
 // the surrounding environment for the SyncSession. The components of this
 // environment are either valid or not valid for the entire context lifetime,
@@ skipping 33 matching lines @@
 static const int kDefaultMaxCommitBatchSize = 25;
 
 namespace sessions {
 class ScopedSessionContextConflictResolver;
 class TestScopedSessionEventListener;
 
 class SyncSessionContext {
  public:
   SyncSessionContext(ServerConnectionManager* connection_manager,
                      syncable::Directory* directory,
-                     const ModelSafeRoutingInfo& model_safe_routing_info,
                      const std::vector<ModelSafeWorker*>& workers,
                      ExtensionsActivityMonitor* extensions_activity_monitor,
                      ThrottledDataTypeTracker* throttled_data_type_tracker,
                      const std::vector<SyncEngineEventListener*>& listeners,
                      DebugInfoGetter* debug_info_getter,
                      TrafficRecorder* traffic_recorder);
   ~SyncSessionContext();
 
   ConflictResolver* resolver() { return resolver_; }
   ServerConnectionManager* connection_manager() {
@@ skipping 133 matching lines @@
  private:
   SyncSessionContext* context_;
   ConflictResolver* resolver_;
   DISALLOW_COPY_AND_ASSIGN(ScopedSessionContextConflictResolver);
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // SYNC_SESSIONS_SYNC_SESSION_CONTEXT_H_