Linux: fix retrieving passwords with non-ASCII characters from the default password store.

chrome/browser/password_manager/login_database_posix.cc

 // Copyright (c) 2010 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/password_manager/login_database.h"
 
 #include "base/utf_string_conversions.h"
 
 // TODO: Actually encrypt passwords on Linux.
 
 std::string LoginDatabase::EncryptedString(const string16& plain_text)
     const {
   return UTF16ToUTF8(plain_text);
 }
 
 string16 LoginDatabase::DecryptedString(const std::string& cipher_text)
     const {
-  return ASCIIToUTF16(cipher_text);
+  return UTF8ToUTF16(cipher_text);
 }