[Sync] Refactor passphrase state handling

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 {
 
 FakeSyncEncryptionHandler::FakeSyncEncryptionHandler()
     : encrypted_types_(SensitiveTypes()),
       encrypt_everything_(false),
-      explicit_passphrase_(false),
+      passphrase_state_(IMPLICIT_PASSPHRASE),
       cryptographer_(&encryptor_) {
 }
 FakeSyncEncryptionHandler::~FakeSyncEncryptionHandler() {}
 
 void FakeSyncEncryptionHandler::Init() {
   // Do nothing.
 }
 
 void FakeSyncEncryptionHandler::ApplyNigoriUpdate(
     const sync_pb::NigoriSpecifics& nigori,
     syncable::BaseTransaction* const trans) {
   if (nigori.encrypt_everything())
     EnableEncryptEverything();
   if (nigori.using_explicit_passphrase())
-    explicit_passphrase_ = true;
+    passphrase_state_ = CUSTOM_PASSPHRASE;
 
   if (cryptographer_.CanDecrypt(nigori.encrypted()))
     cryptographer_.InstallKeys(nigori.encrypted());
   else if (nigori.has_encrypted())
     cryptographer_.SetPendingKeys(nigori.encrypted());
 
   if (cryptographer_.has_pending_keys()) {
     DVLOG(1) << "OnPassPhraseRequired Sent";
     sync_pb::EncryptedData pending_keys = cryptographer_.GetPendingKeys();
     FOR_EACH_OBSERVER(SyncEncryptionHandler::Observer, observers_,
@@ skipping 26 matching lines @@
 }
 
 void FakeSyncEncryptionHandler::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void FakeSyncEncryptionHandler::SetEncryptionPassphrase(
     const std::string& passphrase,
     bool is_explicit) {
   if (is_explicit)
-    explicit_passphrase_ = true;
+    passphrase_state_ = CUSTOM_PASSPHRASE;
 }
 
 void FakeSyncEncryptionHandler::SetDecryptionPassphrase(
     const std::string& passphrase) {
   // Do nothing.
 }
 
 void FakeSyncEncryptionHandler::EnableEncryptEverything() {
   if (encrypt_everything_)
     return;
   encrypt_everything_ = true;
   encrypted_types_ = ModelTypeSet::All();
   FOR_EACH_OBSERVER(
       Observer, observers_,
       OnEncryptedTypesChanged(encrypted_types_, encrypt_everything_));
 }
 
 bool FakeSyncEncryptionHandler::EncryptEverythingEnabled() const {
   return encrypt_everything_;
 }
 
-bool FakeSyncEncryptionHandler::IsUsingExplicitPassphrase() const {
-  return explicit_passphrase_;
+PassphraseState FakeSyncEncryptionHandler::GetPassphraseState() const {
+  return passphrase_state_;
 }
 
 }  // namespace syncer