Remove all remaining traces of MessageLoopProxy.

chrome/browser/android/data_usage/data_use_ui_tab_model_unittest.cc

 // Copyright 2015 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/android/data_usage/data_use_ui_tab_model.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 88 matching lines @@
         tab_id, at_time, &actual_tracking_info);
     EXPECT_NE(expected_label.empty(), tracking_info_valid);
     if (tracking_info_valid) {
       EXPECT_EQ(expected_label, actual_tracking_info.label);
       EXPECT_EQ(expected_tag, actual_tracking_info.tag);
     }
   }
 
  protected:
   void SetUp() override {
-    io_task_runner_ = content::BrowserThread::GetMessageLoopProxyForThread(
+    io_task_runner_ = content::BrowserThread::GetTaskRunnerForThread(
         content::BrowserThread::IO);
-    ui_task_runner_ = content::BrowserThread::GetMessageLoopProxyForThread(
+    ui_task_runner_ = content::BrowserThread::GetTaskRunnerForThread(
         content::BrowserThread::UI);
 
     data_use_aggregator_.reset(
         new data_usage::DataUseAggregator(nullptr, nullptr));
 
     external_data_use_observer_.reset(new ExternalDataUseObserver(
         data_use_aggregator_.get(), io_task_runner_, ui_task_runner_));
     // Wait for |external_data_use_observer_| to create the Java object.
     base::RunLoop().RunUntilIdle();
 
@@ skipping 479 matching lines @@
   base::RunLoop().RunUntilIdle();
   RegisterURLRegexes(std::vector<std::string>(url_regexes.size(), kFooPackage),
                      url_regexes,
                      std::vector<std::string>(url_regexes.size(), kFooLabel));
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace android
 
 }  // namespace chrome