Implement a dbus client for CupsTool.

chromeos/dbus/dbus_client_bundle.h

Index: chromeos/dbus/dbus_client_bundle.h
diff --git a/chromeos/dbus/dbus_client_bundle.h b/chromeos/dbus/dbus_client_bundle.h
index 176e3ac8351ef4db538f097baba20f1d55f0cdce..b3108f93d505ce7480c94ea15560534f96384f45 100644
--- a/chromeos/dbus/dbus_client_bundle.h
+++ b/chromeos/dbus/dbus_client_bundle.h
@@ -17,6 +17,7 @@ class ArcObbMounterClient;
 class CrasAudioClient;
 class CrosDisksClient;
 class CryptohomeClient;
+class CupsClient;
 class DebugDaemonClient;
 class EasyUnlockClient;
 class GsmSMSClient;
@@ -65,6 +66,7 @@ class CHROMEOS_EXPORT DBusClientBundle {
     SYSTEM_CLOCK = 1 << 15,
     UPDATE_ENGINE = 1 << 16,
     ARC_OBB_MOUNTER = 1 << 17,
+    CUPS_CLIENT = 1 << 18,
   };
 
   explicit DBusClientBundle(DBusClientTypeMask unstub_client_mask);
@@ -99,6 +101,8 @@ class CHROMEOS_EXPORT DBusClientBundle {
     return cryptohome_client_.get();
   }
 
+  CupsClient* cups_client() { return cups_client_.get(); }
+
   DebugDaemonClient* debug_daemon_client() {
     return debug_daemon_client_.get();
   }
@@ -182,6 +186,7 @@ class CHROMEOS_EXPORT DBusClientBundle {
   std::unique_ptr<CrasAudioClient> cras_audio_client_;
   std::unique_ptr<CrosDisksClient> cros_disks_client_;
   std::unique_ptr<CryptohomeClient> cryptohome_client_;
+  std::unique_ptr<CupsClient> cups_client_;
   std::unique_ptr<DebugDaemonClient> debug_daemon_client_;
   std::unique_ptr<EasyUnlockClient> easy_unlock_client_;
   std::unique_ptr<LorgnetteManagerClient> lorgnette_manager_client_;