nacl_io: Add SOCK_DGRAM support to socketpair()

native_client_sdk/src/libraries/nacl_io/socket/unix_node.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 LIBRARIES_NACL_IO_SOCKET_UNIX_NODE_H_
 #define LIBRARIES_NACL_IO_SOCKET_UNIX_NODE_H_
 
 #include "nacl_io/ossocket.h"
 #ifdef PROVIDES_SOCKET_API
 
 #include "nacl_io/node.h"
 #include "nacl_io/socket/socket_node.h"
 #include "nacl_io/socket/unix_event_emitter.h"
 
 namespace nacl_io {
 
 class UnixNode : public SocketNode {
  public:
-  explicit UnixNode(Filesystem* filesystem);
+  UnixNode(Filesystem* filesystem, int type);
   UnixNode(Filesystem* filesystem, const UnixNode& peer);
 
   virtual EventEmitter* GetEventEmitter();
 
  protected:
   virtual Error Recv_Locked(void* buffer,
                             size_t len,
                             PP_Resource* out_addr,
                             int* out_len);
   virtual Error Send_Locked(const void* buffer,
@@ skipping 21 matching lines @@
                        int* out_len);
 
  private:
   ScopedUnixEventEmitter emitter_;
 };
 
 }  // namespace nacl_io
 
 #endif  // PROVIDES_SOCKET_API
 #endif  // LIBRARIES_NACL_IO_SOCKET_UNIX_NODE_H_