Update data reduction proxy statistics prefs less often on desktop

components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h

Index: components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h
diff --git a/components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h b/components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h
index b308742aa3426fa6ece7a7f5a93dbb9322c2f86b..d729dac188da8930fd7a0210a7622eeeec6d9f4f 100644
--- a/components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h
+++ b/components/data_reduction_proxy/browser/data_reduction_proxy_metrics.h
@@ -6,13 +6,12 @@
 #define COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_METRICS_H_
 
 #include "base/time/time.h"
+#include "components/data_reduction_proxy/browser/data_reduction_proxy_delayed_pref_service.h"
 
 namespace net {
 class URLRequest;
 }
 
-class PrefService;
-
 namespace data_reduction_proxy {
 
 enum DataReductionProxyRequestType {
@@ -46,7 +45,8 @@ void UpdateContentLengthPrefsForDataReductionProxy(
     int original_content_length,
     bool with_data_reduction_proxy_enabled,
     DataReductionProxyRequestType request_type,
-    base::Time now, PrefService* prefs);
+    base::Time now,
+    DataReductionProxyDelayedPrefService* prefs);
 
 // Records daily data savings statistics to prefs and reports data savings UMA.
 void UpdateContentLengthPrefs(
@@ -54,7 +54,7 @@ void UpdateContentLengthPrefs(
     int original_content_length,
     bool with_data_reduction_proxy_enabled,
     DataReductionProxyRequestType request_type,
-    PrefService* prefs);
+    DataReductionProxyDelayedPrefService* prefs);
 
 }  // namespace data_reduction_proxy