Added a check in Searchbox::OnMostVisitedChanged() to prevent duplicate notifications regarding mos…

chrome/browser/search/instant_service.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/search/instant_service.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 166 matching lines @@
   history::TopSites::MaybeShuffle(&reordered_data);
 
   std::vector<InstantMostVisitedItem> new_most_visited_items;
   for (size_t i = 0; i < reordered_data.size(); i++) {
     const history::MostVisitedURL& url = reordered_data[i];
     InstantMostVisitedItem item;
     item.url = url.url;
     item.title = url.title;
     new_most_visited_items.push_back(item);
   }
-  if (chrome::AreMostVisitedItemsEqual(new_most_visited_items,
-                                       most_visited_items_)) {
-    return;
-  }
 
   most_visited_items_ = new_most_visited_items;
 
   const BrowserList* browser_list =
       BrowserList::GetInstance(chrome::GetActiveDesktop());
   for (BrowserList::const_iterator it = browser_list->begin();
        it != browser_list->end(); ++it) {
     if ((*it)->profile() != profile_ || !((*it)->instant_controller()))
       continue;
 
     InstantController* controller = (*it)->instant_controller()->instant();
     if (!controller)
       continue;
     // TODO(kmadhusu): It would be cleaner to have each InstantController
     // register itself as an InstantServiceObserver and push out updates that
     // way. Refer to crbug.com/246355 for more details.
     controller->UpdateMostVisitedItems();
   }
 #endif
 }