Removing GitDefaultProfile occurences from the remaining WebUI areas (mobile & test)

chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc

Index: chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc b/chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc
index 25a449a75d9a9f47a127282b0b20c76d52af9dc2..a9f90ae9fc9247d07af2636926b74eddaa78d82b 100644
--- a/chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc
+++ b/chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc
@@ -1085,8 +1085,9 @@ void InternetOptionsHandler::EnableCellularCallback(
       if (locale_config) {
         std::string setup_url = locale_config->setup_url();
         if (!setup_url.empty()) {
+          // The mobile device will be managed by the primary user.
           chrome::ScopedTabbedBrowserDisplayer displayer(
-               ProfileManager::GetDefaultProfileOrOffTheRecord(),
+               ProfileManager::GetPrimaryUserProfile(),
                chrome::HOST_DESKTOP_TYPE_ASH);
           chrome::ShowSingletonTab(displayer.browser(), GURL(setup_url));
           return;