Don't use base::MessageLoop::{Quit,QuitClosure} in chrome/

chrome/browser/password_manager/password_store_proxy_mac_unittest.cc

 // Copyright 2015 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_proxy_mac.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/scoped_observer.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/histogram_tester.h"
@@ skipping 19 matching lines @@
 using password_manager::MigrationStatus;
 using password_manager::PasswordStoreChange;
 using password_manager::PasswordStoreChangeList;
 using testing::_;
 using testing::ElementsAre;
 using testing::IsEmpty;
 using testing::Pointee;
 
 ACTION(QuitUIMessageLoop) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  base::MessageLoop::current()->Quit();
+  base::MessageLoop::current()->QuitWhenIdle();
 }
 
 // Returns a change list corresponding to |form| being added.
 PasswordStoreChangeList AddChangeForForm(const PasswordForm& form) {
   return PasswordStoreChangeList(
       1, PasswordStoreChange(PasswordStoreChange::ADD, form));
 }
 
 class MockPasswordStoreConsumer
     : public password_manager::PasswordStoreConsumer {
@@ skipping 436 matching lines @@
 }
 
 INSTANTIATE_TEST_CASE_P(,
                         PasswordStoreProxyMacMigrationTest,
                         testing::Values(MigrationStatus::NOT_STARTED,
                                         MigrationStatus::MIGRATED,
                                         MigrationStatus::FAILED_ONCE,
                                         MigrationStatus::FAILED_TWICE));
 
 }  // namespace