Remove all remaining traces of MessageLoopProxy.

components/keyed_service/core/refcounted_keyed_service.h

 // Copyright 2014 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.
 
 #ifndef COMPONENTS_KEYED_SERVICE_CORE_REFCOUNTED_KEYED_SERVICE_H_
 #define COMPONENTS_KEYED_SERVICE_CORE_REFCOUNTED_KEYED_SERVICE_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 33 matching lines @@
   virtual void ShutdownOnUIThread() = 0;
 
  protected:
   // If your service does not need to be deleted on a specific thread, use the
   // default constructor.
   RefcountedKeyedService();
 
   // If you need your service to be deleted on a specific thread (for example,
   // you're converting a service that used content::DeleteOnThread<IO>), then
   // use this constructor with a reference to the SingleThreadTaskRunner (you
-  // can get it from content::BrowserThread::GetMessageLoopProxyForThread).
+  // can get it from content::BrowserThread::GetTaskRunnerForThread).
   explicit RefcountedKeyedService(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
 
   // The second pass destruction can happen anywhere unless you specify which
   // thread this service must be destroyed on by using the second constructor.
   virtual ~RefcountedKeyedService();
 
  private:
   friend struct impl::RefcountedKeyedServiceTraits;
   friend class base::DeleteHelper<RefcountedKeyedService>;
   friend class base::RefCountedThreadSafe<RefcountedKeyedService,
                                           impl::RefcountedKeyedServiceTraits>;
 
   // Do we have to delete this object on a specific thread?
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 };
 
 #endif  // COMPONENTS_KEYED_SERVICE_CORE_REFCOUNTED_KEYED_SERVICE_H_