Copy some x509_certificate_model_nss functions to src/chromeos (reland)

chrome/browser/chromeos/options/cert_library.h

 // Copyright 2013 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 CHROME_BROWSER_CHROMEOS_OPTIONS_CERT_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_OPTIONS_CERT_LIBRARY_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
+#include "base/threading/thread_checker.h"
 #include "chromeos/cert_loader.h"
 #include "net/cert/x509_certificate.h"
 
 namespace chromeos {
 
 // This class is responsible for keeping track of certificates in a UI
 // friendly manner. It observes CertLoader to receive certificate list
 // updates and sorts them by type for the UI. All public APIs are expected
 // to be called from the UI thread and are non blocking. Observers will also
 // be called on the UI thread.
@@ skipping 67 matching lines @@
   const net::CertificateList& GetCertificateListForType(CertType type) const;
 
   base::ObserverList<CertLibrary::Observer> observer_list_;
 
   // Sorted certificate lists
   net::CertificateList certs_;
   net::CertificateList user_certs_;
   net::CertificateList server_certs_;
   net::CertificateList server_ca_certs_;
 
+  THREAD_CHECKER(thread_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(CertLibrary);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_CERT_LIBRARY_H_