Open the LoginDatabase on the DB thread, not the UI thread.

chrome/browser/password_manager/password_store_x.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/password_manager/password_store_x.h"
 
 #include <algorithm>
 #include <map>
 #include <vector>
 
@@ skipping 23 matching lines @@
   *changes = backend->AddLogin(form);
   return (!changes->empty() &&
           changes->back().type() == PasswordStoreChange::ADD);
 }
 
 }  // namespace
 
 PasswordStoreX::PasswordStoreX(
     scoped_refptr<base::SingleThreadTaskRunner> main_thread_runner,
     scoped_refptr<base::SingleThreadTaskRunner> db_thread_runner,
-    password_manager::LoginDatabase* login_db,
+    scoped_ptr<password_manager::LoginDatabase> login_db,
     NativeBackend* backend)
-    : PasswordStoreDefault(main_thread_runner, db_thread_runner, login_db),
+    : PasswordStoreDefault(main_thread_runner,
+                           db_thread_runner,
+                           login_db.Pass()),
       backend_(backend),
       migration_checked_(!backend),
-      allow_fallback_(false) {}
+      allow_fallback_(false) {
+}
 
 PasswordStoreX::~PasswordStoreX() {}
 
 PasswordStoreChangeList PasswordStoreX::AddLoginImpl(const PasswordForm& form) {
   CheckMigration();
   PasswordStoreChangeList changes;
   if (use_native_backend() && AddLoginToBackend(backend_, form, &changes)) {
     allow_fallback_ = false;
   } else if (allow_default_store()) {
     changes = PasswordStoreDefault::AddLoginImpl(form);
@@ skipping 216 matching lines @@
       // it before deleting the file just in case there is some problem deleting
       // the file (e.g. directory is not writable, but file is), which would
       // otherwise cause passwords to re-migrate next (or maybe every) time.
       DeleteAndRecreateDatabaseFile();
     }
   }
   ssize_t result = ok ? forms.size() : -1;
   STLDeleteElements(&forms);
   return result;
 }