Add InfoBar delegate for previews

components/data_reduction_proxy/core/browser/data_reduction_proxy_service.cc

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_service.cc
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.cc b/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.cc
index ac901dccdce50c8d60ba4cc99a1bf4d08d5c5e91..28e9cdb558088d38722f4d30f87812e87c809359 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.cc
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_service.cc
@@ -223,15 +223,16 @@ void DataReductionProxyService::InitializeLoFiPrefs() {
     SetLoFiModeOff();
   } else if (prefs_->GetInteger(prefs::kLoFiLoadImagesPerSession) <
                  lo_fi_user_requests_for_images_per_session &&
-             prefs_->GetInteger(prefs::kLoFiSnackbarsShownPerSession) >=
+             prefs_->GetInteger(prefs::kLoFiUIShownPerSession) >=
                  lo_fi_user_requests_for_images_per_session) {
     // If the last session didn't have
     // |lo_fi_user_requests_for_images_per_session|, but the user saw at least
-    // that many "Load image" snackbars, reset the consecutive sessions count.
+    // that many "Load image" UI notifications, reset the consecutive sessions
+    // count.
     prefs_->SetInteger(prefs::kLoFiConsecutiveSessionDisables, 0);
   }
   prefs_->SetInteger(prefs::kLoFiLoadImagesPerSession, 0);
-  prefs_->SetInteger(prefs::kLoFiSnackbarsShownPerSession, 0);
+  prefs_->SetInteger(prefs::kLoFiUIShownPerSession, 0);
   prefs_->SetBoolean(prefs::kLoFiWasUsedThisSession, false);
 }