Add an ID to the ContentSuggestion

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 7a13b0a5e0d9e32b0df76d4b186195633d6ef56f..472628c0b3a90ddffdc406d82e6c01ec63a80f89 100644
--- a/ios/chrome/browser/ui/content_suggestions/content_suggestion.h
+++ b/ios/chrome/browser/ui/content_suggestions/content_suggestion.h
@@ -7,14 +7,13 @@
 
 #import <UIKit/UIKit.h>
 
+#import "ios/chrome/browser/ui/content_suggestions/content_suggestion_identifier.h"
 #include "url/gurl.h"
 
 namespace base {
 class Time;
 }
 
-@class ContentSuggestionsSectionInformation;
-
 // Enum defining the type of a ContentSuggestions.
 typedef NS_ENUM(NSInteger, ContentSuggestionType) {
   ContentSuggestionTypeArticle
@@ -22,7 +21,7 @@ typedef NS_ENUM(NSInteger, ContentSuggestionType) {
 
 // Data for a suggestions item, compatible with Objective-C. Mostly acts as a
 // wrapper for ntp_snippets::ContentSuggestion.
-@interface ContentSuggestion : NSObject
+@interface ContentSuggestion : NSObject<ContentSuggestionIdentification>
 
 // Title of the suggestion.
 @property(nonatomic, copy, nullable) NSString* title;
@@ -37,9 +36,6 @@ typedef NS_ENUM(NSInteger, ContentSuggestionType) {
 // The date of publication.
 @property(nonatomic, assign) base::Time publishDate;
 
-// Section information in which this suggestion should be.
-@property(nonatomic, strong, nullable)
-    ContentSuggestionsSectionInformation* section;
 @property(nonatomic, assign) ContentSuggestionType type;
 
 @end