Remove all remaining traces of MessageLoopProxy.

chrome/browser/spellchecker/spellcheck_custom_dictionary.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 "chrome/browser/spellchecker/spellcheck_custom_dictionary.h"
 
 #include <stddef.h>
 #include <functional>
 #include <utility>
 
@@ skipping 414 matching lines @@
   Apply(dictionary_change);
   Sync(dictionary_change);
   is_loaded_ = true;
   FOR_EACH_OBSERVER(Observer, observers_, OnCustomDictionaryLoaded());
   if (!result->is_valid_file) {
     // Save cleaned up data only after startup.
     fix_invalid_file_.Reset(
         base::Bind(&SpellcheckCustomDictionary::FixInvalidFile,
                    weak_ptr_factory_.GetWeakPtr(), base::Passed(&result)));
     BrowserThread::PostAfterStartupTask(
-        FROM_HERE,
-        BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI),
+        FROM_HERE, BrowserThread::GetTaskRunnerForThread(BrowserThread::UI),
         fix_invalid_file_.callback());
   }
 }
 
 void SpellcheckCustomDictionary::Apply(const Change& dictionary_change) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!dictionary_change.to_add().empty()) {
     words_.insert(dictionary_change.to_add().begin(),
                   dictionary_change.to_add().end());
   }
@@ skipping 75 matching lines @@
 }
 
 void SpellcheckCustomDictionary::Notify(const Change& dictionary_change) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!IsLoaded() || dictionary_change.empty())
     return;
   FOR_EACH_OBSERVER(Observer,
                     observers_,
                     OnCustomDictionaryChanged(dictionary_change));
 }