Avoid conversion of index to BookmarkNode pointer unnacessarily.

components/bookmarks/managed/managed_bookmarks_tracker.cc

 // Copyright 2014 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 "components/bookmarks/managed/managed_bookmarks_tracker.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 154 matching lines @@
         model_->AddURL(folder, folder_index, title, url);
       }
     }
 
     // The |folder_index| index of |folder| has been updated, so advance it.
     ++folder_index;
   }
 
   // Remove any extra children of |folder| that haven't been reused.
   while (folder->child_count() != folder_index)
-    model_->Remove(folder, folder_index);
+    model_->Remove(folder->GetChild(folder_index));
 }
 
 // static
 bool ManagedBookmarksTracker::LoadBookmark(const base::ListValue* list,
                                            size_t index,
                                            base::string16* title,
                                            GURL* url,
                                            const base::ListValue** children) {
   std::string spec;
   *url = GURL();
   *children = NULL;
   const base::DictionaryValue* dict = NULL;
   if (!list->GetDictionary(index, &dict) ||
       !dict->GetString(kName, title) ||
       (!dict->GetString(kUrl, &spec) &&
        !dict->GetList(kChildren, children))) {
     // Should never happen after policy validation.
     NOTREACHED();
     return false;
   }
   if (!*children) {
     *url = GURL(spec);
     DCHECK(url->is_valid());
   }
   return true;
 }
 
 }  // namespace policy