Add FaviconAttributesProvider to ContentSuggestions

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

Index: ios/chrome/browser/ui/content_suggestions/content_suggestions_data_source.h
diff --git a/ios/chrome/browser/ui/content_suggestions/content_suggestions_data_source.h b/ios/chrome/browser/ui/content_suggestions/content_suggestions_data_source.h
index 3758b553f90aa4660b2bcb9c92c968a9049c392b..a7fe791cd478e0f37c22776ffe682157ef63df13 100644
--- a/ios/chrome/browser/ui/content_suggestions/content_suggestions_data_source.h
+++ b/ios/chrome/browser/ui/content_suggestions/content_suggestions_data_source.h
@@ -8,6 +8,7 @@
 @class ContentSuggestion;
 @class ContentSuggestionIdentifier;
 @class ContentSuggestionsSectionInformation;
+@class FaviconAttributesProvider;
 @protocol ContentSuggestionsDataSink;
 @protocol ContentSuggestionsImageFetcher;
 
@@ -21,6 +22,10 @@ typedef void (^MoreSuggestionsFetched)(NSArray<ContentSuggestion*>* _Nonnull);
 // The data sink that will be notified when the data change.
 @property(nonatomic, nullable, weak) id<ContentSuggestionsDataSink> dataSink;
 
+// Returns a FaviconAttributesProvider to fetch the favicon for the suggestions.
+@property(nonatomic, nullable, strong, readonly)
+    FaviconAttributesProvider* attributesProvider;

[lpromero, 2017/03/29 13:32:07]

I think this should not be know by the UI layer. You should instead add methods
that the mediator will implement.

[gambard, 2017/03/30 08:07:11]

Done.

+
 // Returns all the data currently available.
 - (nonnull NSArray<ContentSuggestion*>*)allSuggestions;