[Sync] Persist keystore key across restarts

sync/internal_api/syncapi_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.
 
 // Unit tests for the SyncApi. Note that a lot of the underlying
 // functionality is provided by the Syncable layer, which has its own
 // unit tests. We'll test SyncApi specific things in this harness.
 
 #include <cstddef>
 #include <map>
@@ skipping 797 matching lines @@
     GetModelSafeRoutingInfo(&routing_info);
 
     // Takes ownership of |sync_notifier_mock_|.
     sync_manager_.Init(temp_dir_.path(),
                        WeakHandle<JsEventHandler>(),
                        "bogus", 0, false,
                        base::MessageLoopProxy::current(),
                        new TestHttpPostProviderFactory(), routing_info, workers,
                        &extensions_activity_monitor_, this, "bogus",
                        credentials,
-                       sync_notifier_mock_, "",
+                       sync_notifier_mock_, "", "",
                        true,  // enable keystore encryption
                        sync_api::SyncManager::TEST_IN_MEMORY,
                        &encryptor_,
                        &handler_,
                        NULL);
 
     EXPECT_TRUE(sync_notifier_observer_);
     EXPECT_TRUE(js_backend_.IsInitialized());
 
     EXPECT_EQ(0, update_enabled_types_call_count_);
@@ skipping 1758 matching lines @@
   EXPECT_FALSE(ready_task);
   EXPECT_TRUE(retry_task);
   browser_sync::ConfigureParams params = sync_manager_.get_config_params();
   EXPECT_EQ(sync_pb::GetUpdatesCallerInfo::RECONFIGURATION,
             params.source);
   EXPECT_TRUE(types_to_config.Equals(params.types_to_config));
   EXPECT_EQ(new_routing_info, params.routing_info);
 }
 
 }  // namespace browser_sync