Pass UIImage instead of gfx::Image in ContentSuggestions

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

Index: ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fetcher.h
diff --git a/ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fetcher.h b/ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fetcher.h
index 46566253d5dfcf984cee3aaccda9c553702a7522..28c0e89b15137789cc6bc1241c9ecaaf742b693a 100644
--- a/ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fetcher.h
+++ b/ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fetcher.h
@@ -5,11 +5,7 @@
 #ifndef IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_IMAGE_UPDATER_H_
 #define IOS_CHROME_BROWSER_UI_CONTENT_SUGGESTIONS_CONTENT_SUGGESTIONS_IMAGE_UPDATER_H_
 
-#import <Foundation/Foundation.h>
-
-namespace gfx {
-class Image;
-}
+#import <UIKit/UIKit.h>
 
 @class ContentSuggestionIdentifier;
 
@@ -17,10 +13,10 @@ class Image;
 @protocol ContentSuggestionsImageFetcher
 
 // Fetches the image associated with the |suggestionIdentifier| and passes it to
-// the |callback|.
+// the |callback|. The callback may never be called.
 - (void)fetchImageForSuggestion:
             (ContentSuggestionIdentifier*)suggestionIdentifier
-                       callback:(void (^)(const gfx::Image&))callback;
+                       callback:(void (^)(UIImage*))callback;
 
 @end