Add CategoryInfo for meta information of content suggestions Categories

components/ntp_snippets/content_suggestions_service.h

Index: components/ntp_snippets/content_suggestions_service.h
diff --git a/components/ntp_snippets/content_suggestions_service.h b/components/ntp_snippets/content_suggestions_service.h
index d572b737ec6c4eb4322614f905eae7f04d150c09..454ec31285be638e7e4fcb456e462e093995a568 100644
--- a/components/ntp_snippets/content_suggestions_service.h
+++ b/components/ntp_snippets/content_suggestions_service.h
@@ -12,6 +12,7 @@
 
 #include "base/callback_forward.h"
 #include "base/observer_list.h"
+#include "base/optional.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/ntp_snippets/category_factory.h"
 #include "components/ntp_snippets/category_status.h"
@@ -78,6 +79,9 @@ class ContentSuggestionsService : public KeyedService,
   // Gets the status of a category.
   CategoryStatus GetCategoryStatus(Category category) const;
 
+  // Gets the meta information of a category.
+  base::Optional<CategoryInfo> GetCategoryInfo(Category category) const;
+
   // Gets the available suggestions for a category. The result is empty if the
   // category is available and empty, but also if the category is unavailable
   // for any reason, see |GetCategoryStatus()|.