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"
+
+namespace net {
+class X509Certificate;
+typedef std::vector<scoped_refptr<X509Certificate>> CertificateList;

[davidben, 2015/08/20 00:40:34]

Per
https://codereview.chromium.org/994743003/diff/1/net/socket/ssl_server_socket...,
don't forward-declare this type.

[pneubeck (no reviews), 2015/08/20 07:18:23]

Done. I think we should fix all such existing forward declarations, as they give
the wrong impression to new developers that this is the correct way of doing it.

+}
+
+namespace chromeos {
+
+class CertificateProvider {
+ public:
+  CertificateProvider() {}
+  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_