Remove calls to deprecated MessageLoop methods in components.

components/history/core/browser/history_service.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.
 
 // The history system runs on a background thread so that potentially slow
 // database operations don't delay the browser. This backend processing is
 // represented by HistoryBackend. The HistoryService's job is to dispatch to
 // that thread.
 //
 // Main thread                       History thread
@@ skipping 830 matching lines @@
     //
     // TODO(ajwong): Cleanup HistoryBackend lifetime issues.
     //     See http://crbug.com/99767.
     history_backend_->AddRef();
     base::Closure closing_task =
         base::Bind(&HistoryBackend::Closing, history_backend_.get());
     ScheduleTask(PRIORITY_NORMAL, closing_task);
     closing_task.Reset();
     HistoryBackend* raw_ptr = history_backend_.get();
     history_backend_ = nullptr;
-    thread_->message_loop()->ReleaseSoon(FROM_HERE, raw_ptr);
+    thread_->task_runner()->ReleaseSoon(FROM_HERE, raw_ptr);
   }
 
   // Delete the thread, which joins with the background thread. We defensively
   // nullptr the pointer before deleting it in case somebody tries to use it
   // during shutdown, but this shouldn't happen.
   base::Thread* thread = thread_;
   thread_ = nullptr;
   delete thread;
 }
 
@@ skipping 270 matching lines @@
   return favicon_changed_callback_list_.Add(callback);
 }
 
 void HistoryService::NotifyFaviconsChanged(const std::set<GURL>& page_urls,
                                            const GURL& icon_url) {
   DCHECK(thread_checker_.CalledOnValidThread());
   favicon_changed_callback_list_.Notify(page_urls, icon_url);
 }
 
 }  // namespace history