Have content/ create and destroy its own threads.

chrome/browser/browsing_data_quota_helper_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 "testing/gtest/include/gtest/gtest.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_callback_factory.h"
 #include "base/message_loop_proxy.h"
+#include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
 #include "chrome/browser/browsing_data_quota_helper_impl.h"
 #include "content/test/test_browser_thread.h"
 #include "webkit/quota/mock_storage_client.h"
 #include "webkit/quota/quota_manager.h"
 
 using content::BrowserThread;
 
 class BrowsingDataQuotaHelperTest : public testing::Test {
  public:
@@ skipping 151 matching lines @@
   MessageLoop::current()->RunAllPending();
 
   GetPersistentHostQuota(kHost1);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(0, quota());
 
   GetPersistentHostQuota(kHost2);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(10, quota());
 }