Have content/ create and destroy its own threads.

chrome/browser/net/gaia/token_service_unittest.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.
 //
 // This file defines a unit test for the profile's token service.
 
 #include "chrome/browser/net/gaia/token_service_unittest.h"
 
 #include "base/command_line.h"
+#include "base/message_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/signaling_task.h"
 #include "chrome/browser/password_manager/encryptor.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/net/gaia/gaia_auth_fetcher_unittest.h"
 #include "chrome/common/net/gaia/gaia_constants.h"
 #include "content/test/test_url_fetcher_factory.h"
 
 using content::BrowserThread;
@@ skipping 486 matching lines @@
 
     *CommandLine::ForCurrentProcess() = original_cl;
   }
 };
 
 TEST_F(TokenServiceCommandLineTest, TestValueOverride) {
   EXPECT_TRUE(service_.HasTokenForService("my_service"));
   EXPECT_EQ("my_value", service_.GetTokenForService("my_service"));
 }
 #endif   // ifndef NDEBUG