Use content::RunBlockingPoolTask() in tests.

chrome/browser/chromeos/settings/device_settings_test_helper.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_TEST_HELPER_H_
 #define CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_TEST_HELPER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 24 matching lines @@
 // interface. The pattern is to initialize DeviceSettingsService with the helper
 // for the SessionManagerClient pointer. The helper records calls made by
 // DeviceSettingsService. The test can then verify state, after which it should
 // call one of the Flush() variants that will resume processing.
 class DeviceSettingsTestHelper : public SessionManagerClient {
  public:
   // Wraps a device settings service instance for testing.
   DeviceSettingsTestHelper();
   virtual ~DeviceSettingsTestHelper();
 
-  // Flushes operations on the current message loop and the blocking pool.
-  void FlushLoops();
-
   // Runs all pending store callbacks.
   void FlushStore();
 
   // Runs all pending retrieve callbacks.
   void FlushRetrieve();
 
   // Flushes all pending operations.
   void Flush();
 
   // Checks whether any asynchronous Store/Retrieve operations are pending.
@@ skipping 138 matching lines @@
 
   scoped_ptr<DBusThreadManagerSetter> dbus_setter_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DeviceSettingsTestBase);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SETTINGS_DEVICE_SETTINGS_TEST_HELPER_H_