Display offline availability on ContentSuggestions

ios/chrome/browser/ui/content_suggestions/content_suggestion.h

Index: ios/chrome/browser/ui/content_suggestions/content_suggestion.h
diff --git a/ios/chrome/browser/ui/content_suggestions/content_suggestion.h b/ios/chrome/browser/ui/content_suggestions/content_suggestion.h
index f5e01b2b0daa58e186376a5df394a56d0e482496..71967fa78ad4c111c7655996f3612ed5b2c421c7 100644
--- a/ios/chrome/browser/ui/content_suggestions/content_suggestion.h
+++ b/ios/chrome/browser/ui/content_suggestions/content_suggestion.h
@@ -7,6 +7,7 @@
 
 #import <UIKit/UIKit.h>
 
+#import "ios/chrome/browser/ui/content_suggestions/content_suggestion_extra_builder.h"
 #import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion_identifier.h"
 
 namespace base {
@@ -40,6 +41,10 @@ typedef NS_ENUM(NSInteger, ContentSuggestionType) {
 // The date of publication.
 @property(nonatomic, assign) base::Time publishDate;
 
+// Extra information, only available if the suggestion is of type reading list.
+@property(nonatomic, strong, nullable)
+    ContentSuggestionReadingListExtra* readingListExtra;
+
 @property(nonatomic, assign) ContentSuggestionType type;
 
 @end