Remove SetNonBlocking/SetBlocking methods from Socket and add missing close-on-exec

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 "platform/globals.h"
 
 #include "bin/builtin.h"
@@ skipping 221 matching lines @@
   static intptr_t CreateConnect(RawAddr addr,
                                 const intptr_t port);
   static intptr_t CreateBindDatagram(
       RawAddr* addr, intptr_t port, bool reuseAddress);
   static intptr_t GetPort(intptr_t fd);
   static SocketAddress* GetRemotePeer(intptr_t fd, intptr_t* port);
   static void GetError(intptr_t fd, OSError* os_error);
   static int GetType(intptr_t fd);
   static intptr_t GetStdioHandle(intptr_t num);
   static void Close(intptr_t fd);
-  static bool SetNonBlocking(intptr_t fd);
-  static bool SetBlocking(intptr_t fd);
   static bool GetNoDelay(intptr_t fd, bool* enabled);
   static bool SetNoDelay(intptr_t fd, bool enabled);
   static bool GetMulticastLoop(intptr_t fd, intptr_t protocol, bool* enabled);
   static bool SetMulticastLoop(intptr_t fd, intptr_t protocol, bool enabled);
   static bool GetMulticastHops(intptr_t fd, intptr_t protocol, int* value);
   static bool SetMulticastHops(intptr_t fd, intptr_t protocol, int value);
   static bool GetBroadcast(intptr_t fd, bool* value);
   static bool SetBroadcast(intptr_t fd, bool value);
   static bool JoinMulticast(
       intptr_t fd, RawAddr* addr, RawAddr* interface, int interfaceIndex);
@@ skipping 55 matching lines @@
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(ServerSocket);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_SOCKET_H_