Flag for Background Loading of Offline Pages.

components/offline_pages/offline_page_feature.h

Index: components/offline_pages/offline_page_feature.h
diff --git a/components/offline_pages/offline_page_feature.h b/components/offline_pages/offline_page_feature.h
index 1d01a2d495ca35640c9e0cc0b17e3281d87a078a..fde3a5ee78eaaa8610a3eefb019901018114a513 100644
--- a/components/offline_pages/offline_page_feature.h
+++ b/components/offline_pages/offline_page_feature.h
@@ -11,6 +11,7 @@
 namespace offline_pages {
 
 extern const base::Feature kOffliningRecentPagesFeature;
+extern const base::Feature kOfflinePagesBackgroundLoadingFeature;
 
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.components.offlinepages
 enum class FeatureMode {
@@ -31,6 +32,9 @@ bool IsOfflinePagesEnabled();
 // Returns true if offlining of recent pages (aka 'Last N pages') is enabled.
 bool IsOffliningRecentPagesEnabled();
 
+// Returns true if saving offline pages in the background is enabled.
+bool IsOfflinePagesBackgroundLoadingEnabled();
+
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_FEATURE_H_