Update Linux to use scoped_refptr<T>::get() rather than implicit "operator T*"

net/cert/nss_cert_database.h

 // 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.
 
 #ifndef NET_CERT_NSS_CERT_DATABASE_H_
 #define NET_CERT_NSS_CERT_DATABASE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 36 matching lines @@
    protected:
     Observer() {}
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Observer);
   };
 
   // Stores per-certificate error codes for import failures.
   struct NET_EXPORT ImportCertFailure {
    public:
-    ImportCertFailure(X509Certificate* cert, int err);
+    ImportCertFailure(const scoped_refptr<X509Certificate>& cert, int err);
     ~ImportCertFailure();
 
     scoped_refptr<X509Certificate> certificate;
     int net_error;
   };
   typedef std::vector<ImportCertFailure> ImportCertFailureList;
 
   // Constants that define which usages a certificate is trusted for.
   // They are used in combination with CertType to specify trust for each type
   // of certificate.
@@ skipping 131 matching lines @@
   void NotifyObserversOfCertTrustChanged(const X509Certificate* cert);
 
   const scoped_refptr<ObserverListThreadSafe<Observer> > observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(NSSCertDatabase);
 };
 
 }  // namespace net
 
 #endif  // NET_CERT_NSS_CERT_DATABASE_H_