📰 Persist category dismissals

components/ntp_snippets/category.h

Index: components/ntp_snippets/category.h
diff --git a/components/ntp_snippets/category.h b/components/ntp_snippets/category.h
index 0220cb54e97c51cf5e28738c0aa06f00af4a5252..c4b5701764e31db41b95dbf4698f6679a16f5e80 100644
--- a/components/ntp_snippets/category.h
+++ b/components/ntp_snippets/category.h
@@ -64,6 +64,11 @@ class Category {
   // Returns whether this category matches the given |known_category|.
   bool IsKnownCategory(KnownCategories known_category) const;
 
+  // Returns whether this category is a remote category. Note: this looks at
+  // the |id_| to determine this and requires remote categories to respect the
+  // restriction on remote ids expressed in |KnownCategories|.
+  bool IsRemote() const;
+
  private:
   friend class CategoryFactory;