diff --git a/real_system_state.cc b/real_system_state.cc
index 1beb541..703a175 100644
--- a/real_system_state.cc
+++ b/real_system_state.cc
@@ -24,9 +24,9 @@
 #include <base/memory/ptr_util.h>
 #include <base/time/time.h>
 #include <brillo/message_loops/message_loop.h>
-#if USE_LIBCROS
+#if USE_CHROME_KIOSK_APP || USE_CHROME_NETWORK_PROXY
 #include <chromeos/dbus/service_constants.h>
-#endif  // USE_LIBCROS
+#endif  // USE_CHROME_KIOSK_APP || USE_CHROME_NETWORK_PROXY
 
 #include "update_engine/common/boot_control.h"
 #include "update_engine/common/boot_control_stub.h"
@@ -65,14 +65,16 @@
     return false;
   }
 
-#if USE_LIBCROS
+#if USE_CHROME_KIOSK_APP
   libcros_proxy_.reset(new org::chromium::LibCrosServiceInterfaceProxy(
       DBusConnection::Get()->GetDBus(), chromeos::kLibCrosServiceName));
+#endif  // USE_CHROME_KIOSK_APP
+#if USE_CHROME_NETWORK_PROXY
   network_proxy_service_proxy_.reset(
       new org::chromium::NetworkProxyServiceInterfaceProxy(
           DBusConnection::Get()->GetDBus(),
           chromeos::kNetworkProxyServiceName));
-#endif  // USE_LIBCROS
+#endif  // USE_CHROME_NETWORK_PROXY
 
   LOG_IF(INFO, !hardware_->IsNormalBootMode()) << "Booted in dev mode.";
   LOG_IF(INFO, !hardware_->IsOfficialBuild()) << "Booted non-official build.";
@@ -143,27 +145,28 @@
       new CertificateChecker(prefs_.get(), &openssl_wrapper_));
   certificate_checker_->Init();
 
-#if USE_LIBCROS
-  org::chromium::NetworkProxyServiceInterfaceProxyInterface* net_proxy =
-      network_proxy_service_proxy_.get();
-  org::chromium::LibCrosServiceInterfaceProxyInterface* libcros_proxy =
-      libcros_proxy_.get();
+  update_attempter_.reset(
+      new UpdateAttempter(this,
+                          certificate_checker_.get(),
+#if USE_CHROME_NETWORK_PROXY
+                          network_proxy_service_proxy_.get()));
 #else
-  org::chromium::NetworkProxyServiceInterfaceProxyInterface* net_proxy =
-      nullptr;
-  org::chromium::LibCrosServiceInterfaceProxyInterface* libcros_proxy =
-      nullptr;
-#endif  // USE_LIBCROS
+                          nullptr)));
+#endif  // USE_CHROME_NETWORK_PROXY
 
   // Initialize the UpdateAttempter before the UpdateManager.
-  update_attempter_.reset(new UpdateAttempter(this, certificate_checker_.get(),
-                                              net_proxy));
   update_attempter_->Init();
 
   // Initialize the Update Manager using the default state factory.
   chromeos_update_manager::State* um_state =
-      chromeos_update_manager::DefaultStateFactory(
-          &policy_provider_, libcros_proxy, this);
+      chromeos_update_manager::DefaultStateFactory(&policy_provider_,
+#if USE_CHROME_KIOSK_APP
+                                                   libcros_proxy_.get(),
+#else
+                                                   nullptr,
+#endif  // USE_CHROME_KIOSK_APP
+                                                   this);
+
   if (!um_state) {
     LOG(ERROR) << "Failed to initialize the Update Manager.";
     return false;