Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/android/download/download_manager_service_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/download/download_manager_service.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/download_url_parameters.h"
 #include "content/public/test/mock_download_item.h"
 #include "content/public/test/mock_download_manager.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/origin.h"
 
 using ::testing::_;
@@ skipping 53 matching lines @@
         &DownloadManagerServiceTest::OnResumptionDone, base::Unretained(this)));
     service_->ResumeDownload(
         env, nullptr,
         JavaParamRef<jstring>(
             env,
             base::android::ConvertUTF8ToJavaString(env, download_guid).obj()),
         false);
     EXPECT_FALSE(success_);
     service_->OnHistoryQueryComplete();
     while (!finished_)
-      message_loop_.RunUntilIdle();
+      base::RunLoop().RunUntilIdle();
   }
 
  protected:
   base::MessageLoop message_loop_;
   MockDownloadManagerService* service_;
   bool finished_;
   bool success_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadManagerServiceTest);
 };
 
 // Test that resumption succeeds if the download item is found and can be
 // resumed.
 TEST_F(DownloadManagerServiceTest, ResumptionWithResumableItem) {
   service_->CreateDownloadItem(true);
   StartDownload("0000");
   EXPECT_TRUE(success_);
 }
 
 // Test that resumption fails if the target download item is not resumable.
 TEST_F(DownloadManagerServiceTest, ResumptionWithNonResumableItem) {
   service_->CreateDownloadItem(false);
   StartDownload("0000");
   EXPECT_FALSE(success_);
 }