kiosk: Support update url for enterprise.

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 1da9fbce411e2f914bdd15e1a432556ee8a1b446..c0edb0730fbc461ebab304f90c4cfd2cc87e65de 100644
--- a/chrome/browser/chromeos/settings/device_settings_provider.cc
+++ b/chrome/browser/chromeos/settings/device_settings_provider.cc
@@ -180,6 +180,11 @@ void DecodeLoginPolicies(
             kAccountsPrefDeviceLocalAccountsKeyKioskAppId,
             entry->kiosk_app().app_id());
       }
+      if (entry->kiosk_app().has_update_url()) {
+        entry_dict->SetStringWithoutPathExpansion(
+            kAccountsPrefDeviceLocalAccountsKeyKioskAppUpdateURL,
+            entry->kiosk_app().update_url());
+      }
     } else if (entry->has_deprecated_public_session_id()) {
       // Deprecated public session specification.
       entry_dict->SetStringWithoutPathExpansion(
@@ -608,6 +613,12 @@ void DeviceSettingsProvider::SetInPolicy() {
                   &kiosk_app_id)) {
             account->mutable_kiosk_app()->set_app_id(kiosk_app_id);
           }
+          std::string kiosk_app_update_url;
+          if (entry_dict->GetStringWithoutPathExpansion(
+                  kAccountsPrefDeviceLocalAccountsKeyKioskAppUpdateURL,
+                  &kiosk_app_update_url)) {
+            account->mutable_kiosk_app()->set_update_url(kiosk_app_update_url);
+          }
         } else {
           NOTREACHED();
         }