ChromeOS: This CL moves chromeos/login/user_names* to user_mananger.

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 b5014e874b026bf1c2ea7a17920db2a5c6c0a6ca..00ed6d752269efc6db8bbc9b91e12234da3f6c4c 100644
--- a/chrome/browser/chromeos/login/session/user_session_manager.cc
+++ b/chrome/browser/chromeos/login/session/user_session_manager.cc
@@ -91,7 +91,6 @@
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "chromeos/login/auth/stub_authenticator.h"
-#include "chromeos/login/user_names.h"
 #include "chromeos/network/portal_detector/network_portal_detector.h"
 #include "chromeos/network/portal_detector/network_portal_detector_strategy.h"
 #include "chromeos/settings/cros_settings_names.h"
@@ -111,6 +110,7 @@
 #include "components/user_manager/known_user.h"
 #include "components/user_manager/user.h"
 #include "components/user_manager/user_manager.h"
+#include "components/user_manager/user_names.h"
 #include "components/user_manager/user_type.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
@@ -442,7 +442,7 @@ void UserSessionManager::CompleteGuestSessionLogin(const GURL& start_url) {
   if (!about_flags::AreSwitchesIdenticalToCurrentCommandLine(
           user_flags, *base::CommandLine::ForCurrentProcess(), NULL)) {
     DBusThreadManager::Get()->GetSessionManagerClient()->SetFlagsForUser(
-        cryptohome::Identification(login::GuestAccountId()),
+        cryptohome::Identification(user_manager::GuestAccountId()),
         base::CommandLine::StringVector());
   }