Update data reduction proxy statistics prefs less often on desktop

components/data_reduction_proxy/browser/data_reduction_proxy_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 COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_SETTINGS_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_SETTINGS_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_member.h"
 #include "base/threading/thread_checker.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_configurator.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_params.h"
+#include "components/data_reduction_proxy/browser/data_reduction_proxy_statistics_prefs.h"
 #include "net/base/net_util.h"
 #include "net/base/network_change_notifier.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
 class PrefService;
 
 namespace net {
 class HostPortPair;
 class HttpNetworkSession;
 class HttpResponseHeaders;
@@ skipping 67 matching lines @@
   DataReductionProxyParams* params() const {
     return params_.get();
   }
 
   // Initializes the data reduction proxy with profile and local state prefs,
   // and a |UrlRequestContextGetter| for canary probes. The caller must ensure
   // that all parameters remain alive for the lifetime of the
   // |DataReductionProxySettings| instance.
   void InitDataReductionProxySettings(
       PrefService* prefs,
-      PrefService* local_state_prefs,
       net::URLRequestContextGetter* url_request_context_getter);
 
   // Initializes the data reduction proxy with profile and local state prefs,
   // a |UrlRequestContextGetter| for canary probes, and a proxy configurator.
   // The caller must ensure that all parameters remain alive for the lifetime of
   // the |DataReductionProxySettings| instance.
   // TODO(marq): Remove when iOS supports the new interface above.
   void InitDataReductionProxySettings(
       PrefService* prefs,
-      PrefService* local_state_prefs,
       net::URLRequestContextGetter* url_request_context_getter,
       DataReductionProxyConfigurator* configurator);
 
+  // Sets the |statistics_prefs_| to be used for data reduction proxy pref reads
+  // and writes.
+  void SetDataReductionProxyStatisticsPrefs(
+      DataReductionProxyStatisticsPrefs* statistics_prefs);
+
   // Sets the |on_data_reduction_proxy_enabled_| callback and runs to register
   // the DataReductionProxyEnabled synthetic field trial.
   void SetOnDataReductionEnabledCallback(
       const base::Callback<void(bool)>& on_data_reduction_proxy_enabled);
 
   // Sets the logic the embedder uses to set the networking configuration that
   // causes traffic to be proxied.
   void SetProxyConfigurator(
       DataReductionProxyConfigurator* configurator);
 
@@ skipping 49 matching lines @@
 
  protected:
   void InitPrefMembers();
 
   // Returns a fetcher for the probe to check if OK for the proxy to use SPDY.
   // Virtual for testing.
   virtual net::URLFetcher* GetURLFetcherForAvailabilityCheck();
 
   // Virtualized for unit test support.
   virtual PrefService* GetOriginalProfilePrefs();
-  virtual PrefService* GetLocalStatePrefs();
 
   // Sets the proxy configs, enabling or disabling the proxy according to
   // the value of |enabled| and |alternative_enabled|. Use the alternative
   // configuration only if |enabled| and |alternative_enabled| are true. If
   // |restricted| is true, only enable the fallback proxy. |at_startup| is true
   // when this method is called from InitDataReductionProxySettings.
   virtual void SetProxyConfigs(bool enabled,
                                bool alternative_enabled,
                                bool restricted,
                                bool at_startup);
@@ skipping 92 matching lines @@
   bool enabled_by_user_;
   bool disabled_on_vpn_;
   bool unreachable_;
 
   scoped_ptr<net::URLFetcher> fetcher_;
 
   BooleanPrefMember spdy_proxy_auth_enabled_;
   BooleanPrefMember data_reduction_proxy_alternative_enabled_;
 
   PrefService* prefs_;
-  PrefService* local_state_prefs_;
+  DataReductionProxyStatisticsPrefs* statistics_prefs_;
 
   net::URLRequestContextGetter* url_request_context_getter_;
 
   base::Callback<void(bool)> on_data_reduction_proxy_enabled_;
 
   DataReductionProxyConfigurator* configurator_;
 
   base::ThreadChecker thread_checker_;
 
   scoped_ptr<DataReductionProxyParams> params_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxySettings);
 };
 
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_SETTINGS_H_