CHECK for LoginDisplayHost instance in ActivateWizard

chrome/browser/chromeos/login/session/user_session_manager.cc

Index: chrome/browser/chromeos/login/session/user_session_manager.cc
diff --git a/chrome/browser/chromeos/login/session/user_session_manager.cc b/chrome/browser/chromeos/login/session/user_session_manager.cc
index 9544cc8ed3610e423130c77b15644b1971b6aa2c..dcb0fb126fdd4d2da0d90e73207c44663e64e9e5 100644
--- a/chrome/browser/chromeos/login/session/user_session_manager.cc
+++ b/chrome/browser/chromeos/login/session/user_session_manager.cc
@@ -980,11 +980,9 @@ void UserSessionManager::FinalizePrepareProfile(Profile* profile) {
 
 void UserSessionManager::ActivateWizard(const std::string& screen_name) {
   LoginDisplayHost* host = LoginDisplayHostImpl::default_host();
-  DCHECK(host);
-  if (host) {
-    scoped_ptr<base::DictionaryValue> params;
-    host->StartWizard(screen_name, params.Pass());
-  }
+  CHECK(host);
+  scoped_ptr<base::DictionaryValue> params;
+  host->StartWizard(screen_name, params.Pass());
 }
 
 void UserSessionManager::InitializeStartUrls() const {