[Sync] Split encryption state and logic out of PSS and SBHI.

components/sync/engine/sync_engine_host_stub.cc

 // Copyright 2016 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/sync_engine_host_stub.h"
 
 namespace syncer {
 
 SyncEngineHostStub::SyncEngineHostStub() = default;
 SyncEngineHostStub::~SyncEngineHostStub() = default;
@@ skipping 17 matching lines @@
 void SyncEngineHostStub::OnDirectoryTypeUpdateCounterUpdated(
     ModelType type,
     const UpdateCounters& counters) {}
 
 void SyncEngineHostStub::OnDatatypeStatusCounterUpdated(
     ModelType type,
     const StatusCounters& counters) {}
 
 void SyncEngineHostStub::OnConnectionStatusChange(ConnectionStatus status) {}
 
-void SyncEngineHostStub::OnPassphraseRequired(
-    PassphraseRequiredReason reason,
-    const sync_pb::EncryptedData& pending_keys) {}
-
-void SyncEngineHostStub::OnPassphraseAccepted() {}
-
-void SyncEngineHostStub::OnEncryptedTypesChanged(ModelTypeSet encrypted_types,
-                                                 bool encrypt_everything) {}
-
-void SyncEngineHostStub::OnEncryptionComplete() {}
-
 void SyncEngineHostStub::OnMigrationNeededForTypes(ModelTypeSet types) {}
 
 void SyncEngineHostStub::OnExperimentsChanged(const Experiments& experiments) {}
 
 void SyncEngineHostStub::OnActionableError(const SyncProtocolError& error) {}
 
-void SyncEngineHostStub::OnLocalSetPassphraseEncryption(
-    const SyncEncryptionHandler::NigoriState& nigori_state) {}
-
 }  // namespace syncer