Move most visited item state info from InstantController to InstantService.

chrome/renderer/searchbox/searchbox.cc

Index: chrome/renderer/searchbox/searchbox.cc
diff --git a/chrome/renderer/searchbox/searchbox.cc b/chrome/renderer/searchbox/searchbox.cc
index 847d4cda2c5f649d1426c9b482a278cfc5c75dc9..1856261155381652af78dd8bbd9c4f8c5576f6bc 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -97,13 +97,15 @@ void SearchBox::NavigateToURL(const GURL& url,
 void SearchBox::DeleteMostVisitedItem(
     InstantRestrictedID most_visited_item_id) {
   render_view()->Send(new ChromeViewHostMsg_SearchBoxDeleteMostVisitedItem(
-      render_view()->GetRoutingID(), most_visited_item_id));
+      render_view()->GetRoutingID(),
+      GetURLForMostVisitedItem(most_visited_item_id)));
 }
 
 void SearchBox::UndoMostVisitedDeletion(
     InstantRestrictedID most_visited_item_id) {
   render_view()->Send(new ChromeViewHostMsg_SearchBoxUndoMostVisitedDeletion(
-      render_view()->GetRoutingID(), most_visited_item_id));
+      render_view()->GetRoutingID(),
+      GetURLForMostVisitedItem(most_visited_item_id)));
 }
 
 void SearchBox::UndoAllMostVisitedDeletions() {
@@ -406,3 +408,8 @@ bool SearchBox::GetMostVisitedItemWithID(
   return most_visited_items_cache_.GetItemWithRestrictedID(most_visited_item_id,
                                                            item);
 }
+
+GURL SearchBox::GetURLForMostVisitedItem(InstantRestrictedID item_id) const {
+  InstantMostVisitedItem item;
+  return GetMostVisitedItemWithID(item_id, &item) ? item.url : GURL();
+}