Wire sync shutdown reason from PSS all the way down to sync manager.

chrome/browser/sync/glue/sync_backend_host_mock.h

 // Copyright 2013 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 CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 34 matching lines @@
 
   virtual void SetEncryptionPassphrase(
       const std::string& passphrase,
       bool is_explicit) OVERRIDE;
 
   virtual bool SetDecryptionPassphrase(
       const std::string& passphrase) OVERRIDE;
 
   virtual void StopSyncingForShutdown() OVERRIDE;
 
-  virtual scoped_ptr<base::Thread> Shutdown(ShutdownOption option) OVERRIDE;
+  virtual scoped_ptr<base::Thread> Shutdown(syncer::ShutdownReason reason)
+      OVERRIDE;
 
   virtual void UnregisterInvalidationIds() OVERRIDE;
 
   virtual void ConfigureDataTypes(
       syncer::ConfigureReason reason,
       const DataTypeConfigStateMap& config_state_map,
       const base::Callback<void(syncer::ModelTypeSet,
                                 syncer::ModelTypeSet)>& ready_task,
       const base::Callback<void()>& retry_callback) OVERRIDE;
 
@@ skipping 44 matching lines @@
 
   void set_fail_initial_download(bool should_fail);
 
  private:
   bool fail_initial_download_;
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_MOCK_H_