Move most visited item state info from InstantController to InstantService.

chrome/renderer/searchbox/searchbox.h

Index: chrome/renderer/searchbox/searchbox.h
diff --git a/chrome/renderer/searchbox/searchbox.h b/chrome/renderer/searchbox/searchbox.h
index 441994ba3d30850bdc8d54c39ed85914caa3d88b..068f1f6872ef64fdfd959defd1de7ddb63ac95c2 100644
--- a/chrome/renderer/searchbox/searchbox.h
+++ b/chrome/renderer/searchbox/searchbox.h
@@ -152,6 +152,9 @@ class SearchBox : public content::RenderViewObserver,
   // Sets the query to a new value.
   void SetQuery(const string16& query, bool verbatim);
 
+  // Returns the URL of the Most Visited item specified by the |item_id|.
+  GURL GetURLForMostVisitedItem(InstantRestrictedID item_id) const;
+
   string16 query_;
   bool verbatim_;
   bool query_is_restricted_;