Delete unused BluetoothAudioSink code.

device/bluetooth/bluetooth_adapter_win.h

 // 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.
 
 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_WIN_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_WIN_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_audio_sink.h"
 #include "device/bluetooth/bluetooth_discovery_session.h"
 #include "device/bluetooth/bluetooth_export.h"
 #include "device/bluetooth/bluetooth_task_manager_win.h"
 
 namespace base {
 class SequencedTaskRunner;
 class Thread;
 }  // namespace base
 
 namespace device {
@@ skipping 30 matching lines @@
   void CreateRfcommService(
       const BluetoothUUID& uuid,
       const ServiceOptions& options,
       const CreateServiceCallback& callback,
       const CreateServiceErrorCallback& error_callback) override;
   void CreateL2capService(
       const BluetoothUUID& uuid,
       const ServiceOptions& options,
       const CreateServiceCallback& callback,
       const CreateServiceErrorCallback& error_callback) override;
-  void RegisterAudioSink(
-      const BluetoothAudioSink::Options& options,
-      const AcquiredCallback& callback,
-      const BluetoothAudioSink::ErrorCallback& error_callback) override;
   void RegisterAdvertisement(
       std::unique_ptr<BluetoothAdvertisement::Data> advertisement_data,
       const CreateAdvertisementCallback& callback,
       const AdvertisementErrorCallback& error_callback) override;
   BluetoothLocalGattService* GetGattService(
       const std::string& identifier) const override;
 
   // BluetoothTaskManagerWin::Observer override
   void AdapterStateChanged(
       const BluetoothTaskManagerWin::AdapterState& state) override;
@@ skipping 79 matching lines @@
   // NOTE: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothAdapterWin> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterWin);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_WIN_H_