Use weak_ptr for OnServerBoundCertModelInfoLoaded callback too.

chrome/browser/cookies_tree_model.cc

 // Copyright (c) 2012 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/cookies_tree_model.h"
 
 #include <algorithm>
 #include <functional>
 #include <vector>
 
@@ skipping 679 matching lines @@
 
   if (quota_helper_) {
     quota_helper_->StartFetching(
         base::Bind(&CookiesTreeModel::OnQuotaModelInfoLoaded,
                    weak_ptr_factory_.GetWeakPtr()));
   }
 
   if (server_bound_cert_helper_) {
     server_bound_cert_helper_->StartFetching(
         base::Bind(&CookiesTreeModel::OnServerBoundCertModelInfoLoaded,
-                   base::Unretained(this)));
+                   weak_ptr_factory_.GetWeakPtr()));
   }
 }
 
 CookiesTreeModel::~CookiesTreeModel() {}
 
 ///////////////////////////////////////////////////////////////////////////////
 // CookiesTreeModel, TreeModel methods (public):
 
 // TreeModel methods:
 // Returns the set of icons for the nodes in the tree. You only need override
@@ skipping 427 matching lines @@
 
 void CookiesTreeModel::NotifyObserverEndBatch() {
   // Only notify the observers if this is the outermost call to EndBatch() if
   // called in a nested manner.
   if (--batch_update_ == 0) {
     FOR_EACH_OBSERVER(Observer,
                       cookies_observer_list_,
                       TreeModelEndBatch(this));
   }
 }