Add function for finding what a InputStream or OutputStream is attached to

runtime/bin/io_natives.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/io_natives.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 23 matching lines @@
   V(Socket_CreateConnect, 3)                                                   \
   V(Socket_Available, 1)                                                       \
   V(Socket_Read, 2)                                                            \
   V(Socket_ReadList, 4)                                                        \
   V(Socket_WriteList, 4)                                                       \
   V(Socket_GetPort, 1)                                                         \
   V(Socket_GetRemotePeer, 1)                                                   \
   V(Socket_GetError, 1)                                                        \
   V(Socket_GetStdioHandle, 2)                                                  \
   V(Socket_NewServicePort, 0)                                                  \
+  V(Socket_GetType, 1)                                                         \
   V(SecureSocket_Connect, 8)                                                   \
   V(SecureSocket_Destroy, 1)                                                   \
   V(SecureSocket_Handshake, 1)                                                 \
   V(SecureSocket_Init, 1)                                                      \
   V(SecureSocket_PeerCertificate, 1)                                           \
   V(SecureSocket_ProcessBuffer, 2)                                             \
   V(SecureSocket_RegisterBadCertificateCallback, 2)                            \
   V(SecureSocket_RegisterHandshakeCompleteCallback, 2)                         \
   V(SecureSocket_InitializeLibrary, 3)                                         \
   V(SystemEncodingToString, 1)                                                 \
@@ skipping 20 matching lines @@
   int num_entries = sizeof(IOEntries) / sizeof(struct NativeEntries);
   for (int i = 0; i < num_entries; i++) {
     struct NativeEntries* entry = &(IOEntries[i]);
     if (!strcmp(function_name, entry->name_) &&
         (entry->argument_count_ == argument_count)) {
       return reinterpret_cast<Dart_NativeFunction>(entry->function_);
     }
   }
   return NULL;
 }