IPH - connect data saver previews

components/feature_engagement_tracker/internal/feature_constants.cc

 /// Copyright 2017 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.
 
 #include "components/feature_engagement_tracker/public/feature_constants.h"
 
 #include "base/feature_list.h"
 
 namespace feature_engagement_tracker {
 
 const base::Feature kIPHDemoMode{"IPH_DemoMode",
                                  base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kIPHDataSaverPreview{"IPH_DataSaverPreview",
+                                         base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHDownloadPageFeature{"IPH_DownloadPage",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kIPHDownloadHomeFeature{"IPH_DownloadHome",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
 }  // namespace feature_engagement_tracker