Make EnterpriseInstallAttributes::GetRegistrationUser() private.

chrome/browser/chromeos/policy/enterprise_install_attributes.cc

Index: chrome/browser/chromeos/policy/enterprise_install_attributes.cc
diff --git a/chrome/browser/chromeos/policy/enterprise_install_attributes.cc b/chrome/browser/chromeos/policy/enterprise_install_attributes.cc
index c303e9ad6a37e36692a46ba3a1644dae99d7bb2d..3da20c84680bc2f69a764edf00c5dd55d15edcc5 100644
--- a/chrome/browser/chromeos/policy/enterprise_install_attributes.cc
+++ b/chrome/browser/chromeos/policy/enterprise_install_attributes.cc
@@ -337,13 +337,6 @@ bool EnterpriseInstallAttributes::IsConsumerKioskDeviceWithAutoLaunch() {
          registration_mode_ == DEVICE_MODE_CONSUMER_KIOSK_AUTOLAUNCH;
 }
 
-std::string EnterpriseInstallAttributes::GetRegistrationUser() {
-  if (!device_locked_)
-    return std::string();
-
-  return registration_user_;
-}
-
 std::string EnterpriseInstallAttributes::GetDomain() const {
   if (!IsEnterpriseDevice())
     return std::string();
@@ -497,4 +490,11 @@ void EnterpriseInstallAttributes::DecodeInstallAttributes(
   }
 }
 
+std::string EnterpriseInstallAttributes::GetRegistrationUser() const {
+  if (!device_locked_)
+    return std::string();
+
+  return registration_user_;
+}
+
 }  // namespace policy