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diff --git a/third_party/grpc/src/cpp/server/secure_server_credentials.h b/third_party/grpc/src/cpp/server/secure_server_credentials.h
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+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CPP_SERVER_SECURE_SERVER_CREDENTIALS_H
+#define GRPC_INTERNAL_CPP_SERVER_SECURE_SERVER_CREDENTIALS_H
+
+#include <memory>
+
+#include <grpc++/security/server_credentials.h>
+
+#include <grpc/grpc_security.h>
+
+#include "src/cpp/server/thread_pool_interface.h"
+
+namespace grpc {
+
+class AuthMetadataProcessorAyncWrapper GRPC_FINAL {
+ public:
+  static void Destroy(void* wrapper);
+
+  static void Process(void* wrapper, grpc_auth_context* context,
+                      const grpc_metadata* md, size_t num_md,
+                      grpc_process_auth_metadata_done_cb cb, void* user_data);
+
+  AuthMetadataProcessorAyncWrapper(
+      const std::shared_ptr<AuthMetadataProcessor>& processor)
+      : thread_pool_(CreateDefaultThreadPool()), processor_(processor) {}
+
+ private:
+  void InvokeProcessor(grpc_auth_context* context, const grpc_metadata* md,
+                       size_t num_md, grpc_process_auth_metadata_done_cb cb,
+                       void* user_data);
+  std::unique_ptr<ThreadPoolInterface> thread_pool_;
+  std::shared_ptr<AuthMetadataProcessor> processor_;
+};
+
+class SecureServerCredentials GRPC_FINAL : public ServerCredentials {
+ public:
+  explicit SecureServerCredentials(grpc_server_credentials* creds)
+      : creds_(creds) {}
+  ~SecureServerCredentials() GRPC_OVERRIDE {
+    grpc_server_credentials_release(creds_);
+  }
+
+  int AddPortToServer(const grpc::string& addr,
+                      grpc_server* server) GRPC_OVERRIDE;
+
+  void SetAuthMetadataProcessor(
+      const std::shared_ptr<AuthMetadataProcessor>& processor) GRPC_OVERRIDE;
+
+ private:
+  grpc_server_credentials* creds_;
+  std::unique_ptr<AuthMetadataProcessorAyncWrapper> processor_;
+};
+
+}  // namespace grpc
+
+#endif  // GRPC_INTERNAL_CPP_SERVER_SECURE_SERVER_CREDENTIALS_H