[Sync] Move keystore key handling to SyncEncryptionHandlerImpl

sync/test/fake_sync_encryption_handler.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.
 
 #include "sync/test/fake_sync_encryption_handler.h"
 
 #include "sync/protocol/nigori_specifics.pb.h"
 #include "sync/syncable/nigori_util.h"
 
 namespace syncer {
@@ skipping 39 matching lines @@
 }
 
 void FakeSyncEncryptionHandler::UpdateNigoriFromEncryptedTypes(
     sync_pb::NigoriSpecifics* nigori,
     syncable::BaseTransaction* const trans) const {
   syncable::UpdateNigoriFromEncryptedTypes(encrypted_types_,
                                            encrypt_everything_,
                                            nigori);
 }
 
+bool FakeSyncEncryptionHandler::NeedKeystoreKey(
+    syncable::BaseTransaction* const trans) const {
+  return keystore_key_.empty();
+}
+
+bool FakeSyncEncryptionHandler::SetKeystoreKey(
+    const std::string& key,
+    syncable::BaseTransaction* const trans) {
+  if (!keystore_key_.empty() || key.empty())
+    return false;
+  keystore_key_ = key;
+
+  DVLOG(1) << "Keystore bootstrap token updated.";
+  FOR_EACH_OBSERVER(SyncEncryptionHandler::Observer, observers_,
+                    OnBootstrapTokenUpdated(key,
+                                            KEYSTORE_BOOTSTRAP_TOKEN));
+  return true;
+}
+
 ModelTypeSet FakeSyncEncryptionHandler::GetEncryptedTypes(
     syncable::BaseTransaction* const trans) const {
   return encrypted_types_;
 }
 
 void FakeSyncEncryptionHandler::AddObserver(Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void FakeSyncEncryptionHandler::RemoveObserver(Observer* observer) {
@@ skipping 24 matching lines @@
 
 bool FakeSyncEncryptionHandler::EncryptEverythingEnabled() const {
   return encrypt_everything_;
 }
 
 PassphraseState FakeSyncEncryptionHandler::GetPassphraseState() const {
   return passphrase_state_;
 }
 
 }  // namespace syncer