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

chrome/browser/autocomplete/shortcuts_backend_unittest.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 "components/omnibox/browser/shortcuts_backend.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 118 matching lines @@
   search_test_utils::WaitForTemplateURLServiceToLoad(template_url_service);
 }
 
 void ShortcutsBackendTest::TearDown() {
   backend_->RemoveObserver(this);
   db_thread_.Stop();
 }
 
 void ShortcutsBackendTest::OnShortcutsLoaded() {
   load_notified_ = true;
-  base::MessageLoop::current()->Quit();
+  base::MessageLoop::current()->QuitWhenIdle();
 }
 
 void ShortcutsBackendTest::OnShortcutsChanged() {
   changed_notified_ = true;
 }
 
 void ShortcutsBackendTest::InitBackend() {
   ShortcutsBackend* backend =
       ShortcutsBackendFactory::GetForProfile(&profile_).get();
   ASSERT_TRUE(backend);
@@ skipping 166 matching lines @@
   ASSERT_TRUE(shortcut4_iter != shortcuts_map().end());
   EXPECT_EQ(shortcut4.id, shortcut4_iter->second.id);
 
   ShortcutsDatabase::ShortcutIDs deleted_ids;
   deleted_ids.push_back(shortcut3.id);
   deleted_ids.push_back(shortcut4.id);
   EXPECT_TRUE(DeleteShortcutsWithIDs(deleted_ids));
 
   ASSERT_EQ(0U, shortcuts_map().size());
 }