ClientCertStoreChromeOS: support additional non-platform certs.

chrome/browser/chromeos/certificate_provider/certificate_provider.h

+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_CERTIFICATE_PROVIDER_CERTIFICATE_PROVIDER_H_
+#define CHROME_BROWSER_CHROMEOS_CERTIFICATE_PROVIDER_CERTIFICATE_PROVIDER_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "net/cert/x509_certificate.h"
+
+namespace chromeos {
+
+class CertificateProvider {
+ public:
+  CertificateProvider() {}

[stevenjb, 2015/08/24 21:09:38]

nit: not needed?

+  virtual ~CertificateProvider() {}
+
+  virtual void GetCertificates(
+      const base::Callback<void(const net::CertificateList&)>& callback) = 0;
+
+  virtual scoped_ptr<CertificateProvider> Copy() = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CertificateProvider);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_CERTIFICATE_PROVIDER_CERTIFICATE_PROVIDER_H_