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ios/chrome/browser/content_suggestions/content_suggestions_mediator.h

Index: ios/chrome/browser/content_suggestions/content_suggestions_mediator.h
diff --git a/ios/chrome/browser/content_suggestions/content_suggestions_mediator.h b/ios/chrome/browser/content_suggestions/content_suggestions_mediator.h
index 9a7746f9494752bf4c86e58888beaf24937726e9..ed1eabd2e83d9da673ad0a2b27c3ed678929f12e 100644
--- a/ios/chrome/browser/content_suggestions/content_suggestions_mediator.h
+++ b/ios/chrome/browser/content_suggestions/content_suggestions_mediator.h
@@ -18,6 +18,7 @@ namespace ntp_snippets {
 class ContentSuggestionsService;
 }
 
+@protocol ContentSuggestionsCommands;
 @class ContentSuggestionIdentifier;
 
 // Mediator for ContentSuggestions. Makes the interface between a
@@ -26,15 +27,22 @@ class ContentSuggestionsService;
 @interface ContentSuggestionsMediator : NSObject<ContentSuggestionsDataSource>
 
 // Initialize the mediator with the |contentService| to mediate.
-- (instancetype)
-initWithContentService:(ntp_snippets::ContentSuggestionsService*)contentService
-      largeIconService:(favicon::LargeIconService*)largeIconService
+- (nullable instancetype)
+initWithContentService:
+    (nonnull ntp_snippets::ContentSuggestionsService*)contentService
+      largeIconService:(nonnull favicon::LargeIconService*)largeIconService
     NS_DESIGNATED_INITIALIZER;
-- (instancetype)init NS_UNAVAILABLE;
+
+- (nullable instancetype)init NS_UNAVAILABLE;
+
+// Command handler for the mediator.
+@property(nonatomic, weak, nullable) id<ContentSuggestionsCommands>
+    commandHandler;
 
 // Dismisses the suggestion from the content suggestions service. It doesn't
 // change the UI.
-- (void)dismissSuggestion:(ContentSuggestionIdentifier*)suggestionIdentifier;
+- (void)dismissSuggestion:
+    (nonnull ContentSuggestionIdentifier*)suggestionIdentifier;
 
 @end