Ensure tests have an active task runner

chrome/browser/prefs/proxy_policy_unittest.cc

 // Copyright (c) 2012 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/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/browser/prefs/pref_service_mock_factory.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/browser/prefs/proxy_config_dictionary.h"
 #include "chrome/browser/prefs/proxy_prefs.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "components/policy/core/common/external_data_fetcher.h"
 #include "components/policy/core/common/mock_configuration_policy_provider.h"
 #include "components/policy/core/common/policy_map.h"
 #include "components/policy/core/common/policy_service_impl.h"
 #include "components/pref_registry/pref_registry_syncable.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "policy/policy_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::Return;
 using ::testing::_;
 
 namespace policy {
 
 namespace {
 
@@ skipping 69 matching lines @@
     if (with_managed_policies)
       factory.SetManagedPolicies(policy_service_.get());
     scoped_refptr<user_prefs::PrefRegistrySyncable> registry(
         new user_prefs::PrefRegistrySyncable);
     scoped_ptr<PrefServiceSyncable> prefs =
         factory.CreateSyncable(registry.get());
     chrome::RegisterUserProfilePrefs(registry.get());
     return prefs.Pass();
   }
 
-  base::MessageLoop loop_;
+  content::TestBrowserThreadBundle thread_bundle_;
   base::CommandLine command_line_;
   MockConfigurationPolicyProvider provider_;
   scoped_ptr<PolicyServiceImpl> policy_service_;
 };
 
 TEST_F(ProxyPolicyTest, OverridesCommandLineOptions) {
   command_line_.AppendSwitchASCII(switches::kProxyBypassList, "123");
   command_line_.AppendSwitchASCII(switches::kProxyServer, "789");
   base::Value* mode_name =
       new base::StringValue(ProxyPrefs::kFixedServersProxyModeName);
@@ skipping 100 matching lines @@
 
   // Try a second time time with the managed PrefStore in place, the
   // auto-detect should be overridden. The default pref store must be
   // in place with the appropriate default value for this to work.
   prefs = CreatePrefService(true);
   ProxyConfigDictionary dict2(prefs->GetDictionary(prefs::kProxy));
   assertProxyModeWithoutParams(dict2, ProxyPrefs::MODE_DIRECT);
 }
 
 }  // namespace policy