Move PostTaskAndReplyWithResult() adapters to a separate header.

components/omnibox/browser/in_memory_url_index.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/in_memory_url_index.h"
 
 #include "base/files/file_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/task_runner_util.h"
 #include "base/trace_event/trace_event.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/history/core/browser/url_database.h"
 #include "components/omnibox/browser/url_index_private_data.h"
 
 using in_memory_url_index::InMemoryURLIndexCacheItem;
 
 // Initializes a whitelist of URL schemes.
 void InitializeSchemeWhitelist(
     SchemeSet* whitelist,
@@ skipping 311 matching lines @@
     task_runner_->PostTask(
         FROM_HERE,
         base::Bind(base::IgnoreResult(base::DeleteFile), path, false));
   }
 }
 
 void InMemoryURLIndex::OnCacheSaveDone(bool succeeded) {
   if (save_cache_observer_)
     save_cache_observer_->OnCacheSaveFinished(succeeded);
 }