Remove OnCertDBChanged |cert| parameter.

net/cert/cert_database_mac.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 "net/cert/cert_database.h"
 
 #include <Security/Security.h>
 
 #include "base/location.h"
 #include "base/logging.h"
@@ skipping 86 matching lines @@
     // that they have already been handled. This may miss events that
     // originated as a result of spawning native dialogs that allow the user
     // to modify Keychain settings. However, err on the side of missing
     // events rather than sending too many events.
     return errSecSuccess;
   }
 
   switch (keychain_event) {
     case kSecKeychainListChangedEvent:
     case kSecTrustSettingsChangedEvent:
-      that->cert_db_->NotifyObserversCertDBChanged(NULL);
+      that->cert_db_->NotifyObserversCertDBChanged();
       break;
 
     default:
       break;
   }
 
   return errSecSuccess;
 }
 
 void CertDatabase::SetMessageLoopForKeychainEvents() {
   // Shutdown will take care to delete the notifier on the right thread.
   if (notifier_.get())
     notifier_.release()->Shutdown();
 
   notifier_.reset(new Notifier(this, base::MessageLoopForUI::current()));
 }
 
 CertDatabase::CertDatabase()
     : observer_list_(new base::ObserverListThreadSafe<Observer>) {
 }
 
 CertDatabase::~CertDatabase() {
   // Shutdown will take care to delete the notifier on the right thread.
   if (notifier_.get())
     notifier_.release()->Shutdown();
 }
 
 }  // namespace net