Remove server socket references

runtime/bin/socket.h

 // 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.
 
 #ifndef BIN_SOCKET_H_
 #define BIN_SOCKET_H_
 
 #include <map>
 
 #include "platform/globals.h"
@@ skipping 377 matching lines @@
   // This should be called from the event handler for every kCloseEvent it gets
   // on listening sockets.
   //
   // Returns `true` if the last reference has been dropped and the underlying
   // socket can be closed.
   //
   // The caller is responsible for obtaining the mutex first, before calling
   // this function.
   bool CloseSafe(intptr_t socketfd);
 
-  // Mark an existing socket as sharable if it is not already marked as
-  // sharable.
-  //
-  // NOTE: This is a temporary measure until ServerSocketReference's are
-  // removed.
-  Dart_Handle MarkSocketFdAsSharableHack(intptr_t socketfd);
-
   Mutex *mutex() { return mutex_; }
 
  private:
   OSSocket *findOSSocketWithAddress(OSSocket *current, const RawAddr& addr) {
     while (current != NULL) {
       if (SocketAddress::AreAddressesEqual(current->address, addr)) {
         return current;
       }
       current = current->next;
     }
     return NULL;
   }
 
   std::map<intptr_t, OSSocket*> sockets_by_port_;
   std::map<intptr_t, OSSocket*> sockets_by_fd_;
   Mutex *mutex_;
 
   typedef std::map<intptr_t, OSSocket*>::iterator SocketsIterator;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ListeningSocketRegistry);
 };
 
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_SOCKET_H_