Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/chromeos/app_mode/app_session.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/chromeos/app_mode/app_session.h"
 
 #include <errno.h>
 #include <signal.h>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
+#include "base/location.h"
 #include "base/macros.h"
-#include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_update_service.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_mode_idle_app_name_notification.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_session_plugin_handler.h"
 #include "chrome/browser/chromeos/login/demo_mode/demo_app_launcher.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 134 matching lines @@
     std::string url_string =
         active_tab ? active_tab->GetURL().spec() : std::string();
     LOG(WARNING) << "Browser opened in kiosk session"
                  << ", url=" << url_string;
 
     browser->window()->Close();
   }
 
   // chrome::BrowserListObserver overrides:
   void OnBrowserAdded(Browser* browser) override {
-    base::MessageLoop::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&BrowserWindowHandler::HandleBrowser,
                    base::Unretained(this),  // LazyInstance, always valid
                    browser));
   }
 
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowHandler);
 };
 
 AppSession::AppSession() {}
@@ skipping 82 matching lines @@
     return;
   is_shutting_down_ = true;
 
   LOG(ERROR) << "Plugin hung detected. Dump and reboot.";
   content::BrowserThread::PostTask(
       content::BrowserThread::IO, FROM_HERE,
       base::Bind(&DumpPluginProcessOnIOThread, hung_plugins));
 }
 
 }  // namespace chromeos