[Offline Pages on the NTP] Hide behind a base::Feature

chrome/browser/android/chrome_feature_list.cc

Index: chrome/browser/android/chrome_feature_list.cc
diff --git a/chrome/browser/android/chrome_feature_list.cc b/chrome/browser/android/chrome_feature_list.cc
index 4ab541438c29b32900cea197cf7e0c4c24069657..8b44469b7a37e05546fa58c7666eef0a6fce1ec9 100644
--- a/chrome/browser/android/chrome_feature_list.cc
+++ b/chrome/browser/android/chrome_feature_list.cc
@@ -24,11 +24,16 @@ namespace {
 // this array may either refer to features defined in this file (above) or in
 // other locations in the code base (e.g. chrome/, components/, etc).
 const base::Feature* kFeaturesExposedToJava[] = {
+    &kNTPOfflinePagesFeature,
     &kPhysicalWebFeature,
 };
 
 }  // namespace
 
+const base::Feature kNTPOfflinePagesFeature {
+  "NTPOfflinePages", base::FEATURE_DISABLED_BY_DEFAULT
+};
+
 const base::Feature kPhysicalWebFeature {
   "PhysicalWeb", base::FEATURE_DISABLED_BY_DEFAULT
 };