Namespace sandbox: add check for unprivileged use of CLONE_NEWUSER

chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc

Index: chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
diff --git a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
index c3ae2659554ed30127d1800e860c8f66a3c7dca7..ba59db86ad4e699e18a20441ffbdbf95289306e1 100644
--- a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
+++ b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.cc
@@ -74,12 +74,7 @@ void ChromeBrowserMainExtraPartsViews::PreProfileInit() {
   // On the Linux desktop, we want to prevent the user from logging in as root,
   // so that we don't destroy the profile. Now that we have some minimal ui
   // initialized, check to see if we're running as root and bail if we are.
-  if (getuid() != 0)
-    return;
-
-  const base::CommandLine& command_line =
-      *base::CommandLine::ForCurrentProcess();
-  if (command_line.HasSwitch(switches::kUserDataDir))
+  if (geteuid() != 0)
     return;
 
   base::string16 title = l10n_util::GetStringFUTF16(