Wrapped data reduction proxy initialization into its own class

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.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 CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_CHROME_SETTINGS_H_
 #define CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_CHROME_SETTINGS_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_auth_request_handler.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
 #include "components/keyed_service/core/keyed_service.h"
 
 namespace base {
 class PrefService;
 }
 
 namespace data_reduction_proxy {
 class DataReductionProxyConfigurator;
+class DataReductionProxyIOData;
 class DataReductionProxyEventStore;
 class DataReductionProxyParams;
 }
 
 namespace net {
 class NetLog;
 class URLRequestContextGetter;
 }
 
 class PrefService;
 
 // Data reduction proxy settings class suitable for use with a Chrome browser.
 // It is keyed to a browser context.
 class DataReductionProxyChromeSettings
     : public data_reduction_proxy::DataReductionProxySettings,
       public KeyedService {
  public:
   // Constructs a settings object with the given configuration parameters.
   // Construction and destruction must happen on the UI thread.
   explicit DataReductionProxyChromeSettings(
       data_reduction_proxy::DataReductionProxyParams* params);
 
   // Destructs the settings object.
   ~DataReductionProxyChromeSettings() override;
 
   // Initialize the settings object with the given configurator, prefs services,
   // and request context.
   void InitDataReductionProxySettings(
-      data_reduction_proxy::DataReductionProxyConfigurator* configurator,
+      data_reduction_proxy::DataReductionProxyIOData* io_data,
       PrefService* profile_prefs,
       PrefService* local_state_prefs,
-      net::URLRequestContextGetter* request_context,
-      net::NetLog* net_log,
-      data_reduction_proxy::DataReductionProxyEventStore* event_store);
+      net::URLRequestContextGetter* request_context);
 
   // Gets the client type for the data reduction proxy.
   static data_reduction_proxy::Client GetClient();
 
  private:
   // Registers the DataReductionProxyEnabled synthetic field trial with
   // the group |data_reduction_proxy_enabled|.
   void RegisterSyntheticFieldTrial(bool data_reduction_proxy_enabled);
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyChromeSettings);
 };
 
 #endif  // CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_CHROME_SETTINGS_H_