Remove remaining calls to deprecated MessageLoop methods on Mac.

components/translate/ios/browser/ios_translate_driver.mm

 // 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.
 
 #include "components/translate/ios/browser/ios_translate_driver.h"
 
 #include "base/bind.h"
-#include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop.h"
 #include "base/strings/sys_string_conversions.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "components/translate/core/browser/translate_client.h"
 #include "components/translate/core/browser/translate_manager.h"
 #include "components/translate/core/common/translate_constants.h"
 #include "components/translate/core/common/translate_errors.h"
 #include "components/translate/core/common/translate_metrics.h"
 #import "components/translate/ios/browser/js_language_detection_manager.h"
 #import "components/translate/ios/browser/js_translate_manager.h"
 #import "components/translate/ios/browser/language_detection_controller.h"
 #import "components/translate/ios/browser/translate_controller.h"
@@ skipping 207 matching lines @@
   }
 
   translate::ReportTimeToLoad(load_time);
   translate::ReportTimeToBeReady(ready_time);
   const char kAutoDetectionLanguage[] = "auto";
   std::string source = (source_language_ != translate::kUnknownLanguageCode)
                            ? source_language_
                            : kAutoDetectionLanguage;
   translate_controller_->StartTranslation(source_language_, target_language_);
   // Check the status of the translation -- after a delay.
-  base::MessageLoop::current()->PostDelayedTask(
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::Bind(&IOSTranslateDriver::CheckTranslateStatus,
                             weak_method_factory_.GetWeakPtr(), source_language_,
                             target_language_, pending_page_seq_no_),
       base::TimeDelta::FromMilliseconds(kTranslateStatusCheckDelayMs));
 }
 
 void IOSTranslateDriver::OnTranslateComplete(
     bool success,
     const std::string& original_language,
     double translation_time) {
   if (!IsPageValid(pending_page_seq_no_))
     return;
 
   if (!success) {
     // TODO(toyoshim): Check |errorCode| of translate.js and notify it here.
     translate_manager_->PageTranslated(source_language_, target_language_,
                                        TranslateErrors::TRANSLATION_ERROR);
   }
 
   TranslationDidSucceed(source_language_, target_language_,
                         pending_page_seq_no_, original_language,
                         translation_time);
 }
 
 }  // namespace translate