Refactor client cert private key handling.

net/ssl/client_cert_identity_test_util.h

+// Copyright 2017 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_SSL_SSL_CLIENT_CERT_IDENTITY_TEST_UTIL_H_
+#define NET_SSL_SSL_CLIENT_CERT_IDENTITY_TEST_UTIL_H_
+
+#include "net/ssl/client_cert_identity.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace net {
+
+// Simple ClientCertIdentity implementation for testing.
+// Note: this implementation of AcquirePrivateKey will always call the callback
+// synchronously.
+class FakeClientCertIdentity : public ClientCertIdentity {
+ public:
+  FakeClientCertIdentity(scoped_refptr<X509Certificate> cert,
+                         scoped_refptr<SSLPrivateKey> key);
+  ~FakeClientCertIdentity() override;
+
+  // Creates a FakeClientCertIdentity from a certificate file (DER or PEM) and
+  // private key file (unencrypted pkcs8). Returns nullptr on error.
+  static std::unique_ptr<FakeClientCertIdentity> CreateFromCertAndKeyFiles(
+      const base::FilePath& dir,
+      const std::string& cert_filename,
+      const std::string& key_filename);
+
+  // Duplicates the FakeClientCertIdentity.
+  std::unique_ptr<FakeClientCertIdentity> Copy();
+
+  // Returns the SSLPrivateKey in a more convenient way, for tests.
+  SSLPrivateKey* ssl_private_key() const { return key_.get(); }
+
+  // ClientCertIdentity implementation:
+  void AcquirePrivateKey(
+      const base::Callback<void(scoped_refptr<SSLPrivateKey>)>&
+          private_key_callback) override;
+#if defined(OS_MACOSX)
+  SecIdentityRef sec_identity_ref() const override;
+#endif
+
+ private:
+  scoped_refptr<SSLPrivateKey> key_;
+};
+
+// Converts a CertificateList to a ClientCertIdentityList of
+// FakeClientCertIdentity, with null private keys.
+ClientCertIdentityList FakeClientCertIdentityListFromCertificateList(
+    const CertificateList& certs);
+
+}  // namespace net
+
+#endif  // NET_SSL_SSL_CLIENT_CERT_IDENTITY_TEST_UTIL_H_