Fix double close in MojoAudioOutputStream.

base/sync_socket_nacl.cc

 // Copyright (c) 2012 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 "base/sync_socket.h"
 
 #include <errno.h>
 #include <limits.h>
 #include <stddef.h>
 #include <stdio.h>
@@ skipping 57 matching lines @@
 size_t SyncSocket::ReceiveWithTimeout(void* buffer, size_t length, TimeDelta) {
   NOTIMPLEMENTED();
   return 0;
 }
 
 size_t SyncSocket::Peek() {
   NOTIMPLEMENTED();
   return 0;
 }
 
+SyncSocket::Handle SyncSocket::Release() {
+  Handle r = handle_;
+  handle_ = kInvalidHandle;
+  return r;
+}
+
 CancelableSyncSocket::CancelableSyncSocket() {
 }
 
 CancelableSyncSocket::CancelableSyncSocket(Handle handle)
     : SyncSocket(handle) {
 }
 
 size_t CancelableSyncSocket::Send(const void* buffer, size_t length) {
   return SyncSocket::Send(buffer, length);
 }
 
 bool CancelableSyncSocket::Shutdown() {
   return SyncSocket::Close();
 }
 
 // static
 bool CancelableSyncSocket::CreatePair(CancelableSyncSocket* socket_a,
                                       CancelableSyncSocket* socket_b) {
   return SyncSocket::CreatePair(socket_a, socket_b);
 }
 
 }  // namespace base