Reload the ReadingListCollection only if changes occurred

ios/chrome/browser/ui/reading_list/reading_list_collection_view_item.h

Index: ios/chrome/browser/ui/reading_list/reading_list_collection_view_item.h
diff --git a/ios/chrome/browser/ui/reading_list/reading_list_collection_view_item.h b/ios/chrome/browser/ui/reading_list/reading_list_collection_view_item.h
index afda7ca1c300119a2fbde4fe6cdaac5b2b4215d8..1e649054a040fa58e8dce2b6d8ae82a2dad59612 100644
--- a/ios/chrome/browser/ui/reading_list/reading_list_collection_view_item.h
+++ b/ios/chrome/browser/ui/reading_list/reading_list_collection_view_item.h
@@ -21,6 +21,9 @@ class GURL;
 @property(nonatomic, copy) NSString* detailText;
 // The URL of the Reading List entry.
 @property(nonatomic, readonly) const GURL& url;
+// Status of the offline version.
+@property(nonatomic, assign)
+    ReadingListEntry::DistillationState distillationState;
 
 // Designated initializer. The |provider| will be used for loading favicon
 // attributes. The |delegate| is used to inform about changes to this item. The