Have content/ create and destroy its own threads.

chrome/browser/ui/webui/chromeos/mobile_setup_ui.cc

 // Copyright (c) 2011 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/ui/webui/chromeos/mobile_setup_ui.h"
 
 #include <algorithm>
 #include <map>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
+#include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/timer.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/network_library.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ skipping 1378 matching lines @@
   // Set up the chrome://mobilesetup/ source.
   Profile* profile = Profile::FromBrowserContext(contents->browser_context());
   profile->GetChromeURLDataManager()->AddDataSource(html_source);
 }
 
 void MobileSetupUI::RenderViewCreated(RenderViewHost* host) {
   ChromeWebUI::RenderViewCreated(host);
   // Destroyed by the corresponding RenderViewHost.
   new PortalFrameLoadObserver(host, tab_contents()->web_ui());
 }