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

chrome/browser/ui/webui/settings/people_handler.cc

Index: chrome/browser/ui/webui/settings/people_handler.cc
diff --git a/chrome/browser/ui/webui/settings/people_handler.cc b/chrome/browser/ui/webui/settings/people_handler.cc
index 214a38c77ff28741547d29de635e719ae0f7b9fa..bb9bc5e2fe9ff0566aac3d1380d48cea638062e5 100644
--- a/chrome/browser/ui/webui/settings/people_handler.cc
+++ b/chrome/browser/ui/webui/settings/people_handler.cc
@@ -824,10 +824,12 @@ void PeopleHandler::PushSyncPrefs() {
   // UI even if no encrypted data types are enabled.
   args.SetBoolean("passphraseRequired", service->IsPassphraseRequired());
 
-  // To distinguish between FROZEN_IMPLICIT_PASSPHRASE and CUSTOM_PASSPHRASE
-  // we only set passphraseTypeIsCustom for CUSTOM_PASSPHRASE.
+  // To distinguish between PassphraseType::FROZEN_IMPLICIT_PASSPHRASE and
+  // PassphraseType::CUSTOM_PASSPHRASE
+  // we only set passphraseTypeIsCustom for PassphraseType::CUSTOM_PASSPHRASE.
   args.SetBoolean("passphraseTypeIsCustom",
-                  service->GetPassphraseType() == syncer::CUSTOM_PASSPHRASE);
+                  service->GetPassphraseType() ==
+                      syncer::PassphraseType::CUSTOM_PASSPHRASE);
   base::Time passphrase_time = service->GetExplicitPassphraseTime();
   syncer::PassphraseType passphrase_type = service->GetPassphraseType();
   if (!passphrase_time.is_null()) {
@@ -841,13 +843,13 @@ void PeopleHandler::PushSyncPrefs() {
         GetStringFUTF16(IDS_SYNC_ENTER_GOOGLE_PASSPHRASE_BODY_WITH_DATE,
                         passphrase_time_str));
     switch (passphrase_type) {
-      case syncer::FROZEN_IMPLICIT_PASSPHRASE:
+      case syncer::PassphraseType::FROZEN_IMPLICIT_PASSPHRASE:
         args.SetString(
             "fullEncryptionBody",
             GetStringFUTF16(IDS_SYNC_FULL_ENCRYPTION_BODY_GOOGLE_WITH_DATE,
                             passphrase_time_str));
         break;
-      case syncer::CUSTOM_PASSPHRASE:
+      case syncer::PassphraseType::CUSTOM_PASSPHRASE:
         args.SetString(
             "fullEncryptionBody",
             GetStringFUTF16(IDS_SYNC_FULL_ENCRYPTION_BODY_CUSTOM_WITH_DATE,
@@ -858,7 +860,7 @@ void PeopleHandler::PushSyncPrefs() {
                        GetStringUTF16(IDS_SYNC_FULL_ENCRYPTION_BODY_CUSTOM));
         break;
     }
-  } else if (passphrase_type == syncer::CUSTOM_PASSPHRASE) {
+  } else if (passphrase_type == syncer::PassphraseType::CUSTOM_PASSPHRASE) {
     args.SetString("fullEncryptionBody",
                    GetStringUTF16(IDS_SYNC_FULL_ENCRYPTION_BODY_CUSTOM));
   } else {