One missed #ifdef and some comments cleaned up.

net/socket/tcp_socket_libevent.cc

 // Copyright 2013 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.
 
 #include "net/socket/tcp_socket.h"
 
 #include <errno.h>
 #include <netinet/tcp.h>
 #include <sys/socket.h>
 
@@ skipping 529 matching lines @@
 int TCPSocketLibevent::TcpFastOpenWrite(
     IOBuffer* buf,
     int buf_len,
     const CompletionCallback& callback) {
   SockaddrStorage storage;
   int rv = socket_->GetPeerAddress(&storage);
   if (rv != OK)
     return rv;
 
   int flags = 0x20000000;  // Magic flag to enable TCP_FASTOPEN.
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_ANDROID)
   // sendto() will fail with EPIPE when the system doesn't support TCP Fast
   // Open. Theoretically that shouldn't happen since the caller should check
   // for system support on startup, but users may dynamically disable TCP Fast
   // Open via sysctl.
   flags |= MSG_NOSIGNAL;
-#endif // defined(OS_LINUX)
+#endif // defined(OS_LINUX) || defined(OS_ANDROID)
   rv = HANDLE_EINTR(sendto(socket_->socket_fd(),
                            buf->data(),
                            buf_len,
                            flags,
                            storage.addr,
                            storage.addr_len));
   tcp_fastopen_connected_ = true;
 
   if (rv >= 0) {
     fast_open_status_ = FAST_OPEN_FAST_CONNECT_RETURN;
@@ skipping 50 matching lines @@
       }
     } else {
       fast_open_status_ = (fast_open_status_ == FAST_OPEN_FAST_CONNECT_RETURN ?
                            FAST_OPEN_SYN_DATA_FAILED :
                            FAST_OPEN_NO_SYN_DATA_FAILED);
     }
   }
 }
 
 }  // namespace net