Removing unused PreviewsDataSavings

components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
index a258151356bc690b7d9fe9d5ce28441f3b53fa26..e690303296f15318336138b22a552b278217b8fa 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
@@ -17,7 +17,6 @@
 #include "base/threading/thread_checker.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_metrics.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_service_observer.h"
-#include "components/data_reduction_proxy/core/common/data_savings_recorder.h"
 #include "components/prefs/pref_member.h"
 #include "url/gurl.h"
 
@@ -73,8 +72,7 @@ enum DataReductionSettingsEnabledAction {
 // Central point for configuring the data reduction proxy.
 // This object lives on the UI thread and all of its methods are expected to
 // be called from there.
-class DataReductionProxySettings : public DataReductionProxyServiceObserver,
-                                   public DataSavingsRecorder {
+class DataReductionProxySettings : public DataReductionProxyServiceObserver {
  public:
   typedef base::Callback<bool(const std::string&, const std::string&)>
       SyntheticFieldTrialRegistrationCallback;
@@ -82,11 +80,6 @@ class DataReductionProxySettings : public DataReductionProxyServiceObserver,
   DataReductionProxySettings();
   virtual ~DataReductionProxySettings();
 
-  // DataSavingsRecorder implementation:
-  bool UpdateDataSavings(const std::string& data_usage_host,
-                         int64_t data_used,
-                         int64_t original_size) override;
-
   // Initializes the Data Reduction Proxy with the name of the preference that
   // controls enabling it, profile prefs and a |DataReductionProxyIOData|. The
   // caller must ensure that all parameters remain alive for the lifetime of