Add the PPAPI X509 Certificate interface and implementation.

ppapi/tests/test_x509_certificate_private.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 PPAPPI_TESTS_TEST_X509_CERTIFICATE_PRIVATE_H_
+#define PPAPPI_TESTS_TEST_X509_CERTIFICATE_PRIVATE_H_
+
+#include <string>
+
+#include "ppapi/tests/test_case.h"
+
+class TestX509CertificatePrivate : public TestCase {
+ public:
+  explicit TestX509CertificatePrivate(TestingInstance* instance);
+
+  // TestCase implementation.
+  virtual bool Init();
+  virtual void RunTests(const std::string& filter);
+
+ private:
+  std::string TestValidCertificate();
+  std::string TestInvalidCertificate();
+};
+
+#endif  // PPAPPI_TESTS_TEST_X509_CERTIFICATE_PRIVATE_H_