Remove use of deprecated MessageLoop methods in chrome/.

chrome/test/media_router/media_router_base_browsertest.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/test/media_router/media_router_base_browsertest.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/location.h"
 #include "base/path_service.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "base/timer/elapsed_timer.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/switches.h"
 
 
@@ skipping 64 matching lines @@
 bool MediaRouterBaseBrowserTest::ConditionalWait(
     base::TimeDelta timeout,
     base::TimeDelta interval,
     const base::Callback<bool(void)>& callback) {
   base::ElapsedTimer timer;
   do {
     if (callback.Run())
       return true;
 
     base::RunLoop run_loop;
-    base::MessageLoop::current()->PostDelayedTask(
+    base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE, run_loop.QuitClosure(), interval);
     run_loop.Run();
   } while (timer.Elapsed() < timeout);
 
   return false;
 }
 
 void MediaRouterBaseBrowserTest::Wait(base::TimeDelta timeout) {
   base::RunLoop run_loop;
-  base::MessageLoop::current()->PostDelayedTask(
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, run_loop.QuitClosure(), timeout);
   run_loop.Run();
 }
 
 void MediaRouterBaseBrowserTest::OnBackgroundHostCreated(
     extensions::ExtensionHost* host) {
   extension_host_created_ = true;
   DVLOG(0) << "Host created";
   extension_load_event_.Signal();
 }
@@ skipping 14 matching lines @@
     if (PathExists(extension_path)) {
       extension_unpacked_ = extension_path;
     }
   }
 
   // Exactly one of these two arguments should be provided.
   ASSERT_NE(extension_crx_.empty(), extension_unpacked_.empty());
 }
 
 }  // namespace media_router