cros: Use first unlock user's pref for locking screen.

chrome/browser/chromeos/login/screen_locker.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/login/screen_locker.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 209 matching lines @@
       GoogleServiceSigninSuccessDetails details(
           signin->GetAuthenticatedUsername(),
           user_context.password);
       content::NotificationService::current()->Notify(
           chrome::NOTIFICATION_GOOGLE_SIGNIN_SUCCESSFUL,
           content::Source<Profile>(profile),
           content::Details<const GoogleServiceSigninSuccessDetails>(&details));
     }
   }
 
-  if (const User* user = UserManager::Get()->FindUser(user_context.username)) {
-    if (!user->is_active())
-      UserManager::Get()->SwitchActiveUser(user_context.username);
-  } else {
+  if (!UserManager::Get()->FindUser(user_context.username))
     NOTREACHED() << "Logged in user not found.";
-  }
 
   authentication_capture_.reset(new AuthenticationParametersCapture());
   authentication_capture_->user_context = user_context;
 
   // Add guard for case when something get broken in call chain to unlock
   // for sure.
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ScreenLocker::UnlockOnLoginSuccess,
           weak_factory_.GetWeakPtr()),
@@ skipping 202 matching lines @@
 
 bool ScreenLocker::IsUserLoggedIn(const std::string& username) {
   for (UserList::const_iterator it = users_.begin(); it != users_.end(); ++it) {
     if ((*it)->email() == username)
       return true;
   }
   return false;
 }
 
 }  // namespace chromeos