Fixes NetworkInterface.list crash on Android

runtime/bin/socket_linux.cc

 // 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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_LINUX)
 
 #include "bin/socket.h"
@@ skipping 320 matching lines @@
     // OpenVPN's virtual device tun0.
     return false;
   }
   int family = ifa->ifa_addr->sa_family;
   return ((lookup_family == family) ||
          (((lookup_family == AF_UNSPEC) &&
           ((family == AF_INET) || (family == AF_INET6)))));
 }
 
 
+bool Socket::ListInterfacesSupported() {
+  return true;
+}
+
+
 AddressList<InterfaceSocketAddress>* Socket::ListInterfaces(
     int type,
     OSError** os_error) {
   struct ifaddrs* ifaddr;
 
   int status = NO_RETRY_EXPECTED(getifaddrs(&ifaddr));
   if (status != 0) {
     ASSERT(*os_error == NULL);
     *os_error = new OSError(status,
                             gai_strerror(status),
@@ skipping 231 matching lines @@
   return NO_RETRY_EXPECTED(
       setsockopt(fd, proto, MCAST_LEAVE_GROUP, &mreq, sizeof(mreq))) == 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_LINUX)
 
 #endif  // !defined(DART_IO_DISABLED)