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

components/history/core/test/history_backend_db_base_test.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 "components/history/core/test/history_backend_db_base_test.h"
 
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
@@ skipping 60 matching lines @@
   history_dir_ = temp_dir_.path().AppendASCII("HistoryBackendDBBaseTest");
   ASSERT_TRUE(base::CreateDirectory(history_dir_));
 }
 
 void HistoryBackendDBBaseTest::TearDown() {
   DeleteBackend();
 
   // Make sure we don't have any event pending that could disrupt the next
   // test.
   base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE, base::MessageLoop::QuitClosure());
+      FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
   base::MessageLoop::current()->Run();
 }
 
 void HistoryBackendDBBaseTest::CreateBackendAndDatabase() {
   backend_ = new HistoryBackend(new BackendDelegate(this), nullptr,
                                 base::ThreadTaskRunnerHandle::Get());
   backend_->Init(std::string(), false,
                  TestHistoryDatabaseParamsForPath(history_dir_));
   db_ = backend_->db_.get();
   DCHECK(in_mem_backend_) << "Mem backend should have been set by "
@@ skipping 46 matching lines @@
                        DownloadDangerType::NOT_DANGEROUS,
                        kTestDownloadInterruptReasonNone,
                        id,
                        false,
                        "by_ext_id",
                        "by_ext_name");
   return db_->CreateDownload(download);
 }
 
 }  // namespace history