Make PassphraseType a "enum class" instead of "enum".

components/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 "components/sync/test/fake_sync_encryption_handler.h"
 
 #include "components/sync/protocol/nigori_specifics.pb.h"
 #include "components/sync/syncable/nigori_util.h"
 
 namespace syncer {
 
 FakeSyncEncryptionHandler::FakeSyncEncryptionHandler()
     : encrypted_types_(SensitiveTypes()),
       encrypt_everything_(false),
-      passphrase_type_(IMPLICIT_PASSPHRASE),
+      passphrase_type_(PassphraseType::IMPLICIT_PASSPHRASE),
       cryptographer_(&encryptor_) {}
 FakeSyncEncryptionHandler::~FakeSyncEncryptionHandler() {}
 
 void FakeSyncEncryptionHandler::Init() {
   // Set up a basic cryptographer.
   KeyParams keystore_params = {"localhost", "dummy", "keystore_key"};
   cryptographer_.AddKey(keystore_params);
 }
 
 void FakeSyncEncryptionHandler::ApplyNigoriUpdate(
     const sync_pb::NigoriSpecifics& nigori,
     syncable::BaseTransaction* const trans) {
   if (nigori.encrypt_everything())
     EnableEncryptEverything();
   if (nigori.keybag_is_frozen())
-    passphrase_type_ = CUSTOM_PASSPHRASE;
+    passphrase_type_ = PassphraseType::CUSTOM_PASSPHRASE;
 
   // TODO(zea): consider adding fake support for migration.
   if (cryptographer_.CanDecrypt(nigori.encryption_keybag()))
     cryptographer_.InstallKeys(nigori.encryption_keybag());
   else if (nigori.has_encryption_keybag())
     cryptographer_.SetPendingKeys(nigori.encryption_keybag());
 
   if (cryptographer_.has_pending_keys()) {
     DVLOG(1) << "OnPassPhraseRequired Sent";
     sync_pb::EncryptedData pending_keys = cryptographer_.GetPendingKeys();
@@ skipping 47 matching lines @@
 }
 
 void FakeSyncEncryptionHandler::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void FakeSyncEncryptionHandler::SetEncryptionPassphrase(
     const std::string& passphrase,
     bool is_explicit) {
   if (is_explicit)
-    passphrase_type_ = CUSTOM_PASSPHRASE;
+    passphrase_type_ = PassphraseType::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::IsEncryptEverythingEnabled() const {
   return encrypt_everything_;
 }
 
 PassphraseType FakeSyncEncryptionHandler::GetPassphraseType() const {
   return passphrase_type_;
 }
 
 }  // namespace syncer