[Sync] Allow sync start without sign-in if the local sync backend is on.

components/sync/engine_impl/syncer_unittest.cc

 // Copyright 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 "components/sync/engine_impl/syncer.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 284 matching lines @@
         debug_info_getter_.get(), model_type_registry_.get(),
         true,   // enable keystore encryption
         false,  // force enable pre-commit GU avoidance experiment
         "fake_invalidator_client_id");
     context_->SetRoutingInfo(routing_info);
     syncer_ = new Syncer(&cancelation_signal_);
     scheduler_ = base::MakeUnique<SyncSchedulerImpl>(
         "TestSyncScheduler", BackoffDelayProvider::FromDefaults(),
         context_.get(),
         // scheduler_ owned syncer_ now and will manage the memory of syncer_
-        syncer_);
+        syncer_,
+        false);
 
     syncable::ReadTransaction trans(FROM_HERE, directory());
     Directory::Metahandles children;
     directory()->GetChildHandlesById(&trans, trans.root_id(), &children);
     ASSERT_EQ(0u, children.size());
     root_id_ = TestIdFactory::root();
     parent_id_ = ids_.MakeServer("parent id");
     child_id_ = ids_.MakeServer("child id");
     directory()->set_store_birthday(mock_server_->store_birthday());
     mock_server_->SetKeystoreKey("encryption_key");
@@ skipping 5609 matching lines @@
     EXPECT_EQ("xyz", final_monitor_records["xyz"].extension_id);
     EXPECT_EQ(2049U, final_monitor_records["ABC"].bookmark_write_count);
     EXPECT_EQ(4U, final_monitor_records["xyz"].bookmark_write_count);
   } else {
     EXPECT_TRUE(final_monitor_records.empty())
         << "Should not restore records after successful bookmark commit.";
   }
 }
 
 }  // namespace syncer