[Sync] Add support for performing a GetKey on startup.

sync/test/engine/syncer_command_test.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.
 
 #ifndef SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_
 #define SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_
 
 #include <algorithm>
 #include <string>
 #include <vector>
@@ skipping 109 matching lines @@
   }
 
   void ResetContext() {
     throttled_data_type_tracker_.reset(new ThrottledDataTypeTracker(NULL));
     context_.reset(new sessions::SyncSessionContext(
             mock_server_.get(), directory(),
             GetWorkers(), &extensions_activity_monitor_,
             throttled_data_type_tracker_.get(),
             std::vector<SyncEngineEventListener*>(),
             &mock_debug_info_getter_,
-            &traffic_recorder_));
+            &traffic_recorder_,
+            true  /* enable keystore encryption*/ ));
     context_->set_account_name(directory()->name());
     ClearSession();
   }
 
   // Install a MockServerConnection.  Resets the context.  By default,
   // the context does not have a MockServerConnection attached.
   void ConfigureMockServerConnection() {
     mock_server_.reset(new MockConnectionManager(directory()));
     ResetContext();
   }
@@ skipping 86 matching lines @@
 
   virtual void SetUp() OVERRIDE;
 
   TestUnrecoverableErrorHandler handler_;
   syncable::MockDirectory mock_directory_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_TEST_ENGINE_SYNCER_COMMAND_TEST_H_