[NTP::Push] Add feature

components/ntp_snippets/features.cc

Index: components/ntp_snippets/features.cc
diff --git a/components/ntp_snippets/features.cc b/components/ntp_snippets/features.cc
index 6910f402873d47bcb347aee49a2972d04d22dca7..e18d41e1d9fd8514abb8e1a0edb5b189ecaa3652 100644
--- a/components/ntp_snippets/features.cc
+++ b/components/ntp_snippets/features.cc
@@ -19,6 +19,7 @@ const base::Feature*(kAllFeatures[]) = {&kArticleSuggestionsFeature,
                                         &kCategoryOrder,
                                         &kCategoryRanker,
                                         &kForeignSessionsSuggestionsFeature,
+                                        &kPushUpdatesFeature,
                                         &kIncreasedVisibility,
                                         &kNotificationsFeature,
                                         &kPhysicalWebPageSuggestionsFeature,
@@ -45,6 +46,9 @@ const base::Feature kPhysicalWebPageSuggestionsFeature{
 const base::Feature kForeignSessionsSuggestionsFeature{
     "NTPForeignSessionsSuggestions", base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kPushUpdatesFeature{"NTPPushUpdates",
+                                        base::FEATURE_DISABLED_BY_DEFAULT};
+
 const base::Feature kPreferAmpUrlsFeature{"NTPPreferAmpUrls",
                                           base::FEATURE_ENABLED_BY_DEFAULT};