Move ADJoinErrorType from authpolicy to authpolicy::types namespace

chromeos/dbus/auth_policy_client.h

Index: chromeos/dbus/auth_policy_client.h
diff --git a/chromeos/dbus/auth_policy_client.h b/chromeos/dbus/auth_policy_client.h
index 740d6af3bd2ebfbeff215c48edfde2b3a19c9de9..1947b4a5d1d67a945d1abc0b374c8dd2c5b6df84 100644
--- a/chromeos/dbus/auth_policy_client.h
+++ b/chromeos/dbus/auth_policy_client.h
@@ -14,12 +14,14 @@
 // TODO(rsorokin): Switch to service constants when it's landed.
 // (see crbug.com/659732)
 namespace authpolicy {
+namespace types {
 enum ADJoinErrorType {
   AD_JOIN_ERROR_NONE = 0,
   AD_JOIN_ERROR_UNKNOWN = 1,
   AD_JOIN_ERROR_DBUS_FAIL = 2,
 };
-}
+}  // namespace types
+}  // namespace authpolicy
 
 namespace chromeos {