Update data reduction proxy statistics prefs less often on desktop

components/data_reduction_proxy/browser/data_reduction_proxy_settings_test_utils.h

 // Copyright 2014 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 COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_SETTINGS_TEST_UTILS_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_SETTINGS_TEST_UTILS_H_
 
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 144 matching lines @@
                             bool request_success,
                             bool expected_enabled,
                             bool expected_fallback_restricted);
   void CheckOnPrefChange(bool enabled, bool expected_enabled, bool managed);
   void CheckInitDataReductionProxy(bool enabled_at_startup);
   void RegisterSyntheticFieldTrialCallback(bool proxy_enabled) {
     proxy_enabled_ = proxy_enabled;
   }
 
   TestingPrefServiceSimple pref_service_;
+  DataReductionProxyDelayedPrefService* delayed_pref_service_;
   scoped_ptr<DataReductionProxySettings> settings_;
   scoped_ptr<TestDataReductionProxyParams> expected_params_;
   base::Time last_update_time_;
   bool proxy_enabled_;
 };
 
 // Test implementations should be subclasses of an instantiation of this
 // class parameterized for whatever DataReductionProxySettings class
 // is being tested.
 template <class C>
@@ skipping 22 matching lines @@
         response,
         result,
         success,
         expected_calls);
   }
 };
 
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_SETTINGS_TEST_UTILS_H_