Adding a DataSaverStatus interface to DataReductionProxy

components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc b/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc
index 425a3a3b94071e35817bce36a7479a6da963787e..6e3003e600206d09a150328dd64e020fc3f2be81 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.cc
@@ -358,11 +358,15 @@ void DataReductionProxySettings::GetContentLengths(
     int64_t* original_content_length,
     int64_t* received_content_length,
     int64_t* last_update_time) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(data_reduction_proxy_service_->compression_stats());
 
   data_reduction_proxy_service_->compression_stats()->GetContentLengths(
       days, original_content_length, received_content_length, last_update_time);
 }
 
+bool DataReductionProxySettings::IsDataSaverEnabled() const {
+  return IsDataReductionProxyEnabled();
+}
+
 }  // namespace data_reduction_proxy