Make it possible to build without enable_supervised_users.

chrome/browser/policy/configuration_policy_handler_list_factory.cc

Index: chrome/browser/policy/configuration_policy_handler_list_factory.cc
diff --git a/chrome/browser/policy/configuration_policy_handler_list_factory.cc b/chrome/browser/policy/configuration_policy_handler_list_factory.cc
index b80cb13d35b692065762fba1fd3747ceb146b52c..7c1a81a3e65d4d5593e2badb7e405e9afd213cea 100644
--- a/chrome/browser/policy/configuration_policy_handler_list_factory.cc
+++ b/chrome/browser/policy/configuration_policy_handler_list_factory.cc
@@ -24,7 +24,6 @@
 #include "chrome/browser/profiles/guest_mode_policy_handler.h"
 #include "chrome/browser/profiles/incognito_mode_policy_handler.h"
 #include "chrome/browser/sessions/restore_on_startup_policy_handler.h"
-#include "chrome/browser/supervised_user/supervised_user_creation_policy_handler.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/features.h"
 #include "chrome/common/pref_names.h"
@@ -97,6 +96,10 @@
 #include "components/spellcheck/browser/pref_names.h"
 #endif
 
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
+#include "chrome/browser/supervised_user/supervised_user_creation_policy_handler.h"
+#endif
+
 namespace policy {
 
 namespace {
@@ -915,7 +918,9 @@ std::unique_ptr<ConfigurationPolicyHandlerList> BuildHandlerList(
       base::MakeUnique<extensions::NativeMessagingHostListPolicyHandler>(
           key::kNativeMessagingBlacklist,
           extensions::pref_names::kNativeMessagingBlacklist, true));
+#if BUILDFLAG(ENABLE_SUPERVISED_USERS)
   handlers->AddHandler(base::MakeUnique<SupervisedUserCreationPolicyHandler>());
+#endif  // BUILDFLAG(ENABLE_SUPERVISED_USERS)
 #endif  // !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
 
 #if !defined(OS_ANDROID)