Demo Mode: Enable suborganization enrollment for missing countries.

A bunch of countries were being enrolled into the root organisation
during the online demo mode setup flow when they should be enrolled
into their own suborganizations. Fix this for Belgium, Canada,
Ireland, Italy, Luxembourg, Spain, and the United Kingdom. The
corresponding organisational units and admins have been added
already.

Bug: 1039934
Change-Id: I4945eb89db95b95d1c10795390b04a14c74f36af
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2006900Reviewed-by: Aga Wronska <agawronska@chromium.org>
Commit-Queue: Patti <patricialor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734243}

chrome/browser/chromeos/login/demo_mode/demo_setup_controller.cc

@@ -18,6 +18,7 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_process_platform_part.h"
 #include "chrome/browser/chromeos/login/demo_mode/demo_resources.h"
+#include "chrome/browser/chromeos/login/demo_mode/demo_session.h"
 #include "chrome/browser/chromeos/login/enrollment/auto_enrollment_controller.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
@@ -462,7 +463,8 @@ std::string DemoSetupController::GetSubOrganizationEmail() {
   const std::string country =
       g_browser_process->local_state()->GetString(prefs::kDemoModeCountry);
   const base::flat_set<std::string> kCountriesWithCustomization(
-      {"de", "dk", "fi", "fr", "jp", "nl", "no", "se"});
+      {"be", "ca", "de", "dk", "es", "fi", "fr", "gb", "ie", "it", "jp", "lu",
+       "nl", "no", "se"});
   if (kCountriesWithCustomization.contains(country))
     return "admin-" + country + "@" + policy::kDemoModeDomain;
   return std::string();