Chromad: Switch AuthPolicyClient to use cros_system_api enums.

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 1947b4a5d1d67a945d1abc0b374c8dd2c5b6df84..7680b518a56d46c767f89c17a8b3535bc418995c 100644
--- a/chromeos/dbus/auth_policy_client.h
+++ b/chromeos/dbus/auth_policy_client.h
@@ -10,18 +10,7 @@
 #include "base/callback.h"
 #include "chromeos/chromeos_export.h"
 #include "chromeos/dbus/dbus_client.h"
-
-// 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
+#include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace chromeos {
 
@@ -30,7 +19,8 @@ namespace chromeos {
 // initializes the DBusThreadManager instance.
 class CHROMEOS_EXPORT AuthPolicyClient : public DBusClient {
  public:

[Alexander Alekseev, 2016/12/21 14:45:30]

nit: please document here that error-code may be outside of
authpolicy::ADJoinErrorType domain because this value actually comes from DBUS
integer value .

-  using JoinCallback = base::Callback<void(int error_code)>;
+  using JoinCallback =
+      base::Callback<void(authpolicy::ADJoinErrorType error_code)>;
   using RefreshPolicyCallback = base::Callback<void(bool success)>;
 
   ~AuthPolicyClient() override;