Make SyncBackendRegistrar aware of loaded data

sync/engine/sync_scheduler_unittest.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 "base/bind.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/test/test_timeouts.h"
@@ skipping 100 matching lines @@
     std::vector<ModelSafeWorker*> workers;
     for (std::vector<scoped_refptr<FakeModelWorker> >::iterator it =
          workers_.begin(); it != workers_.end(); ++it) {
       workers.push_back(it->get());
     }
 
     connection_.reset(new MockConnectionManager(directory()));
     connection_->SetServerReachable();
     throttled_data_type_tracker_.reset(new ThrottledDataTypeTracker(NULL));
     context_.reset(new SyncSessionContext(
-            connection_.get(), directory(), routing_info, workers,
+            connection_.get(), directory(), workers,
             &extensions_activity_monitor_, throttled_data_type_tracker_.get(),
             std::vector<SyncEngineEventListener*>(), NULL, NULL));
+    context_->set_routing_info(routing_info);
     context_->set_notifications_enabled(true);
     context_->set_account_name("Test");
     scheduler_.reset(
         new SyncSchedulerImpl("TestSyncScheduler", context(), syncer_));
   }
 
   SyncSchedulerImpl* scheduler() { return scheduler_.get(); }
   MockSyncer* syncer() { return syncer_; }
   MockDelayProvider* delay() { return delay_; }
   MockConnectionManager* connection() { return connection_.get(); }
@@ skipping 1042 matching lines @@
   PumpLoop();
   // Pump again to run job.
   PumpLoop();
 
   StopSyncScheduler();
 
   EXPECT_TRUE(expected == context()->previous_session_routing_info());
 }
 
 }  // namespace syncer