Offline Page Cache uses user interaction triggers for saving pages.

components/offline_pages/core/offline_page_feature.cc

Index: components/offline_pages/core/offline_page_feature.cc
diff --git a/components/offline_pages/core/offline_page_feature.cc b/components/offline_pages/core/offline_page_feature.cc
index ef2b4700ca49aa982799f4ad83b8f395822f47c7..452a1bacad559bde141de9ba8bf8f8ce85cbc150 100644
--- a/components/offline_pages/core/offline_page_feature.cc
+++ b/components/offline_pages/core/offline_page_feature.cc
@@ -16,6 +16,9 @@ const base::Feature kOfflineBookmarksFeature{"OfflineBookmarks",
 const base::Feature kOffliningRecentPagesFeature{
     "OfflineRecentPages", base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kOffliningUsesNavigationTriggersFeature{
+    "OfflineRecentPagesNavigationTriggers", base::FEATURE_ENABLED_BY_DEFAULT};
+
 const base::Feature kOfflinePagesCTFeature{"OfflinePagesCT",
                                            base::FEATURE_ENABLED_BY_DEFAULT};
 
@@ -43,6 +46,16 @@ bool IsOffliningRecentPagesEnabled() {
   return base::FeatureList::IsEnabled(kOffliningRecentPagesFeature);
 }
 
+bool IsOffliningRecentPagesUsingNavigationTriggers() {
+  return base::FeatureList::IsEnabled(kOffliningRecentPagesFeature) &&
+         base::FeatureList::IsEnabled(kOffliningUsesNavigationTriggersFeature);
+}
+
+bool IsOffliningRecentPagesUsingInteractionTriggers() {
+  return base::FeatureList::IsEnabled(kOffliningRecentPagesFeature) &&
+         !base::FeatureList::IsEnabled(kOffliningUsesNavigationTriggersFeature);
+}
+
 bool IsOfflinePagesSvelteConcurrentLoadingEnabled() {
   return base::FeatureList::IsEnabled(
       kOfflinePagesSvelteConcurrentLoadingFeature);