Fix build when ENABLE_MANAGED_USERS is not defined

chrome/browser/ui/webui/downloads_ui_browsertest.cc

Index: chrome/browser/ui/webui/downloads_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/downloads_ui_browsertest.cc b/chrome/browser/ui/webui/downloads_ui_browsertest.cc
index eafa4600f09e04cf1dbdbe27354db3b08d60f50d..025d54afa7642ab093152492c8218f503d140b0e 100644
--- a/chrome/browser/ui/webui/downloads_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/downloads_ui_browsertest.cc
@@ -4,13 +4,9 @@
 
 #include "chrome/browser/ui/webui/downloads_ui_browsertest.h"
 
-#include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/supervised_user/supervised_user_service.h"
-#include "chrome/browser/supervised_user/supervised_user_service_factory.h"
 #include "chrome/browser/ui/browser.h"
-#include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/test/test_utils.h"
 
@@ -22,8 +18,3 @@ void DownloadsUIBrowserTest::SetDeleteAllowed(bool allowed) {
   browser()->profile()->GetPrefs()->
       SetBoolean(prefs::kAllowDeletingBrowserHistory, allowed);
 }
-
-void DownloadsWebUIForSupervisedUsersTest::SetUpCommandLine(
-    CommandLine* command_line) {
-  command_line->AppendSwitchASCII(switches::kSupervisedUserId, "asdf");
-}