[cros] Display emails of users are stored in a separate dictionary in Local State.

chrome/browser/chromeos/login/login_performer.cc

 // Copyright (c) 2011 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/login_performer.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 258 matching lines @@
     }
   }
 
   bool allow_new_user = false;
   cros_settings->GetBoolean(kAccountsPrefAllowNewUser, &allow_new_user);
   if (ScreenLocker::default_screen_locker() || allow_new_user) {
     // Starts authentication if guest login is allowed or online auth pending.
     StartLoginCompletion();
   } else {
     // Otherwise, do whitelist check first.
-    if (cros_settings->FindEmailInList(kAccountsPrefUsers, username)) {
+    if (cros_settings->FindEmailInList(
+            kAccountsPrefUsers, Authenticator::Canonicalize(username))) {
       StartLoginCompletion();
     } else {
       if (delegate_)
         delegate_->WhiteListCheckFailed(username);
       else
         NOTREACHED();
     }
   }
 }
 
@@ skipping 255 matching lines @@
                    profile,
                    username_,
                    password_,
                    captcha_token_,
                    captcha_));
   }
   password_.clear();
 }
 
 }  // namespace chromeos