Adds an experiment that enabled SuggestionsService suggestions (MostLikely) on LocalNTP

chrome/common/instant_types.h

Index: chrome/common/instant_types.h
diff --git a/chrome/common/instant_types.h b/chrome/common/instant_types.h
index f30cde3656efae8a544d734bf1da3df9453387e6..d8672b137c7f1d2aa1011c0aee4064db7661c73f 100644
--- a/chrome/common/instant_types.h
+++ b/chrome/common/instant_types.h
@@ -123,12 +123,21 @@ struct ThemeBackgroundInfo {
 };
 
 struct InstantMostVisitedItem {
+  InstantMostVisitedItem();
+  ~InstantMostVisitedItem();
+
   // The URL of the Most Visited item.
   GURL url;
 
   // The title of the Most Visited page.  May be empty, in which case the |url|
   // is used as the title.
   base::string16 title;
+
+  // The external URL of the thumbnail associated with this page.
+  GURL thumbnail;
+
+  // The external URL of the favicon associated with this page.
+  GURL favicon;
 };
 
 // An InstantMostVisitedItem along with its assigned restricted ID.