Fix double close in MojoAudioOutputStream.

base/sync_socket_posix.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 <fcntl.h>
 #include <limits.h>
 #include <stddef.h>
@@ skipping 189 matching lines @@
   DCHECK_NE(handle_, kInvalidHandle);
   int number_chars = 0;
   if (ioctl(handle_, FIONREAD, &number_chars) == -1) {
     // If there is an error in ioctl, signal that the channel would block.
     return 0;
   }
   DCHECK_GE(number_chars, 0);
   return number_chars;
 }
 
+SyncSocket::Handle SyncSocket::Release() {
+  Handle r = handle_;
+  handle_ = kInvalidHandle;
+  return r;
+}
+
 CancelableSyncSocket::CancelableSyncSocket() {}
 CancelableSyncSocket::CancelableSyncSocket(Handle handle)
     : SyncSocket(handle) {
 }
 
 bool CancelableSyncSocket::Shutdown() {
   DCHECK_NE(handle_, kInvalidHandle);
   return HANDLE_EINTR(shutdown(handle_, SHUT_RDWR)) >= 0;
 }
 
@@ skipping 19 matching lines @@
   return len;
 }
 
 // static
 bool CancelableSyncSocket::CreatePair(CancelableSyncSocket* socket_a,
                                       CancelableSyncSocket* socket_b) {
   return SyncSocket::CreatePair(socket_a, socket_b);
 }
 
 }  // namespace base