Fix double close in MojoAudioOutputStream.

content/browser/renderer_host/media/audio_sync_reader.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 "content/browser/renderer_host/media/audio_sync_reader.h"
 
 #include <algorithm>
+#include <limits>
 #include <string>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/format_macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 115 matching lines @@
       !shared_memory->CreateAndMapAnonymous(memory_size.ValueOrDie()) ||
       !base::CancelableSyncSocket::CreatePair(socket.get(),
                                               foreign_socket.get())) {
     return nullptr;
   }
   return base::WrapUnique(new AudioSyncReader(params, std::move(shared_memory),
                                               std::move(socket),
                                               std::move(foreign_socket)));
 }
 
+std::unique_ptr<base::CancelableSyncSocket>
+AudioSyncReader::TakeForeignSocket() {
+  DCHECK(foreign_socket_);
+  return std::move(foreign_socket_);
+}
+
 // media::AudioOutputController::SyncReader implementations.
 void AudioSyncReader::RequestMoreData(base::TimeDelta delay,
                                       base::TimeTicks delay_timestamp,
                                       int prior_frames_skipped) {
   // We don't send arguments over the socket since sending more than 4
   // bytes might lead to being descheduled. The reading side will zero
   // them when consumed.
   AudioOutputBuffer* buffer =
       reinterpret_cast<AudioOutputBuffer*>(shared_memory_->memory());
   // Increase the number of skipped frames stored in shared memory.
@@ skipping 101 matching lines @@
                                base::TimeDelta::FromMilliseconds(1),
                                base::TimeDelta::FromMilliseconds(1000),
                                50);
     return false;
   }
 
   return true;
 }
 
 }  // namespace content