Move the thread test helper to base/test

content/browser/appcache/chrome_appcache_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.
 
 #include "base/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
 #include "chrome/test/testing_browser_process.h"
 #include "chrome/test/testing_browser_process_test.h"
-#include "chrome/test/thread_test_helper.h"
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/appcache/appcache_storage_impl.h"
 
 namespace {
 const FilePath::CharType kTestingAppCacheDirname[] =
     FILE_PATH_LITERAL("Application Cache");
 }
 
@@ skipping 78 matching lines @@
   ASSERT_TRUE(file_util::PathExists(appcache_path));
   ASSERT_TRUE(file_util::PathExists(appcache_path.AppendASCII("Index")));
 
   appcache_service = NULL;
   message_loop_.RunAllPending();
 
   ASSERT_FALSE(file_util::PathExists(appcache_path));
 }
 
 }  // namespace appcache