arc: Use AndroidKioskAppInfoProto.display_name() as ARC++ Kiosk app name.

chrome/browser/chromeos/settings/device_settings_provider.cc

Index: chrome/browser/chromeos/settings/device_settings_provider.cc
diff --git a/chrome/browser/chromeos/settings/device_settings_provider.cc b/chrome/browser/chromeos/settings/device_settings_provider.cc
index e954622d5a3310f6ee4869d43c5eb747c7cb5b13..a08da6c0ddaaeed30cbdbfcc14c55016e6e8c7a4 100644
--- a/chrome/browser/chromeos/settings/device_settings_provider.cc
+++ b/chrome/browser/chromeos/settings/device_settings_provider.cc
@@ -221,6 +221,11 @@ void DecodeLoginPolicies(
             chromeos::kAccountsPrefDeviceLocalAccountsKeyArcKioskAction,
             entry->android_kiosk_app().action());
       }
+      if (entry->android_kiosk_app().has_display_name()) {
+        entry_dict->SetStringWithoutPathExpansion(
+            chromeos::kAccountsPrefDeviceLocalAccountsKeyArcKioskDisplayName,
+            entry->android_kiosk_app().display_name());
+      }
     } else if (entry->has_deprecated_public_session_id()) {
       // Deprecated public session specification.
       entry_dict->SetStringWithoutPathExpansion(