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diff --git a/src/node/ext/call_credentials.h b/src/node/ext/call_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_NODE_CALL_CREDENTIALS_H_
+#define GRPC_NODE_CALL_CREDENTIALS_H_
+
+#include <node.h>
+#include <nan.h>
+#include "grpc/grpc_security.h"
+
+namespace grpc {
+namespace node {
+
+class CallCredentials : public Nan::ObjectWrap {
+ public:
+  static void Init(v8::Local<v8::Object> exports);
+  static bool HasInstance(v8::Local<v8::Value> val);
+  /* Wrap a grpc_credentials struct in a javascript object */
+  static v8::Local<v8::Value> WrapStruct(grpc_credentials *credentials);
+
+  /* Returns the grpc_credentials struct that this object wraps */
+  grpc_credentials *GetWrappedCredentials();
+
+ private:
+  explicit CallCredentials(grpc_credentials *credentials);
+  ~CallCredentials();
+
+  // Prevent copying
+  CallCredentials(const CallCredentials &);
+  CallCredentials &operator=(const CallCredentials &);
+
+  static NAN_METHOD(New);
+  static NAN_METHOD(CreateSsl);
+  static NAN_METHOD(CreateFromPlugin);
+
+  static NAN_METHOD(Compose);
+  static Nan::Callback *constructor;
+  // Used for typechecking instances of this javascript class
+  static Nan::Persistent<v8::FunctionTemplate> fun_tpl;
+
+  grpc_credentials *wrapped_credentials;
+};
+
+/* Auth metadata plugin functionality */
+
+typedef struct plugin_state {
+  Nan::Callback *callback;
+} plugin_state;
+
+typedef struct plugin_callback_data {
+  plugin_state *state;
+  const char *service_url;
+  grpc_credentials_plugin_metadata_cb cb;
+  void *user_data;
+} plugin_callback_data;
+
+void plugin_get_metadata(void *state, const char *service_url,
+                         grpc_credentials_plugin_metadata_cb cb,
+                         void *user_data);
+
+void plugin_destroy_state(void *state);
+
+NAN_METHOD(PluginCallback);
+
+NAUV_WORK_CB(SendPluginCallback);
+
+}  // namespace node
+}  // namepsace grpc
+
+#endif  // GRPC_NODE_CALL_CREDENTIALS_H_