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 8c5ff9d54bb8535817bfcdbb080d5fc3dd4495c4..48c939f20b158a87ed26a86d366fe7364daea969 100644
--- a/chrome/renderer/searchbox/searchbox.h
+++ b/chrome/renderer/searchbox/searchbox.h
@@ -153,6 +153,9 @@ 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_;