chromeos: Get rid of browser namespace usage in kiosk_mode_idle_logout.*

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index d20aa7062f4e4061fe41dca5752119322c60e250..7c03d3b6236004fa1cf5b59bc841bf22bf548868 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -352,7 +352,7 @@ void ChromeBrowserMainPartsChromeos::PreProfileInit() {
   // Initialize the screen locker now so that it can receive
   // LOGIN_USER_CHANGED notification from UserManager.
   if (chromeos::KioskModeSettings::Get()->IsKioskModeEnabled()) {
-    chromeos::InitializeKioskModeIdleLogout();
+    chromeos::KioskModeIdleLogout::Initialize();
   } else {
     chromeos::ScreenLocker::InitClass();
   }