[Sync] Persist keystore key across restarts

sync/internal_api/public/test/fake_sync_manager.h

Index: sync/internal_api/public/test/fake_sync_manager.h
diff --git a/sync/internal_api/public/test/fake_sync_manager.h b/sync/internal_api/public/test/fake_sync_manager.h
index b33b27d417905ca9c0f61534bf78df6789552f9a..531785e790a7f01383a81dab49b08182f83ee2d1 100644
--- a/sync/internal_api/public/test/fake_sync_manager.h
+++ b/sync/internal_api/public/test/fake_sync_manager.h
@@ -67,6 +67,7 @@ class FakeSyncManager : public SyncManager {
       const SyncCredentials& credentials,
       scoped_ptr<SyncNotifier> sync_notifier,
       const std::string& restored_key_for_bootstrapping,
+      const std::string& restored_keystore_key_for_bootstrapping,
       bool keystore_encryption_enabled,
       scoped_ptr<InternalComponentsFactory> internal_components_factory,
       Encryptor* encryptor,
@@ -95,6 +96,7 @@ class FakeSyncManager : public SyncManager {
   virtual void RemoveObserver(Observer* observer) OVERRIDE;
   virtual SyncStatus GetDetailedStatus() const OVERRIDE;
   virtual bool IsUsingExplicitPassphrase() OVERRIDE;
+  virtual bool GetKeystoreKeyBootstrapToken(std::string* token) OVERRIDE;
   virtual void SaveChanges() OVERRIDE;
   virtual void StopSyncingForShutdown(const base::Closure& callback) OVERRIDE;
   virtual void ShutdownOnSyncThread() OVERRIDE;