Delete unused BluetoothAudioSink code.

device/bluetooth/test/mock_bluetooth_adapter.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_TEST_MOCK_BLUETOOTH_ADAPTER_H_
 #define DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_ADAPTER_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/scoped_vector.h"
 #include "build/build_config.h"
 #include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_audio_sink.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_discovery_session.h"
 #include "device/bluetooth/test/mock_bluetooth_device.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace device {
 
 class MockBluetoothAdapter : public BluetoothAdapter {
  public:
   class Observer : public BluetoothAdapter::Observer {
@@ skipping 61 matching lines @@
   MOCK_METHOD4(CreateRfcommService,
                void(const BluetoothUUID& uuid,
                     const ServiceOptions& options,
                     const CreateServiceCallback& callback,
                     const CreateServiceErrorCallback& error_callback));
   MOCK_METHOD4(CreateL2capService,
                void(const BluetoothUUID& uuid,
                     const ServiceOptions& options,
                     const CreateServiceCallback& callback,
                     const CreateServiceErrorCallback& error_callback));
-  MOCK_METHOD3(RegisterAudioSink,
-               void(const BluetoothAudioSink::Options& options,
-                    const AcquiredCallback& callback,
-                    const BluetoothAudioSink::ErrorCallback& error_callback));
   MOCK_CONST_METHOD1(GetGattService,
                      BluetoothLocalGattService*(const std::string& identifier));
 
   void StartDiscoverySessionWithFilter(
       std::unique_ptr<BluetoothDiscoveryFilter> discovery_filter,
       const DiscoverySessionCallback& callback,
       const ErrorCallback& error_callback);
 
   // BluetoothAdapter is supposed to manage the lifetime of BluetoothDevices.
   // This method takes ownership of the MockBluetoothDevice. This is only for
@@ skipping 38 matching lines @@
 
   MOCK_METHOD1(RemovePairingDelegateInternal,
                void(BluetoothDevice::PairingDelegate* pairing_delegate));
 
   ScopedVector<MockBluetoothDevice> mock_devices_;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_ADAPTER_H_