Refactor Pickle Read methods to use higher performance PickleIterator.

content/common/ssl_status_serialization.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 "content/common/ssl_status_serialization.h"
 
 #include "base/logging.h"
 #include "base/pickle.h"
 
 namespace content {
@@ skipping 20 matching lines @@
     // No SSL used.
     *cert_id = 0;
     // The following are not applicable and are set to the default values.
     *cert_status = 0;
     *security_bits = -1;
     *ssl_connection_status = 0;
     return false;
   }
 
   Pickle pickle(state.data(), static_cast<int>(state.size()));
-  void * iter = NULL;
+  PickleIterator iter(pickle);
   return pickle.ReadInt(&iter, cert_id) &&
          pickle.ReadUInt32(&iter, cert_status) &&
          pickle.ReadInt(&iter, security_bits) &&
          pickle.ReadInt(&iter, ssl_connection_status);
 }
 
 }  // namespace content