net: Change auto to not deduce raw pointers.

net/ssl/client_key_store.cc

 // Copyright 2015 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/ssl/client_key_store.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "net/cert/x509_certificate.h"
@@ skipping 25 matching lines @@
 
   const auto& it = std::find(providers_.begin(), providers_.end(), provider);
   if (it != providers_.end())
     providers_.erase(it);
 }
 
 scoped_refptr<SSLPrivateKey> ClientKeyStore::FetchClientCertPrivateKey(
     const X509Certificate& certificate) {
   base::AutoLock auto_lock(lock_);
 
-  for (const auto& provider : providers_) {
+  for (auto* provider : providers_) {
     scoped_refptr<SSLPrivateKey> key;
     if (provider->GetCertificateKey(certificate, &key))
       return key;
   }
   return nullptr;
 }
 
 }  // namespace net