Delete unused BluetoothAudioSink code.

device/bluetooth/bluetooth_adapter_android.cc

 // Copyright 2015 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 "device/bluetooth/bluetooth_adapter_android.h"
 
 #include <memory>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 129 matching lines @@
 
 void BluetoothAdapterAndroid::CreateL2capService(
     const BluetoothUUID& uuid,
     const ServiceOptions& options,
     const CreateServiceCallback& callback,
     const CreateServiceErrorCallback& error_callback) {
   NOTIMPLEMENTED();
   error_callback.Run("Not Implemented");
 }
 
-void BluetoothAdapterAndroid::RegisterAudioSink(
-    const BluetoothAudioSink::Options& options,
-    const AcquiredCallback& callback,
-    const BluetoothAudioSink::ErrorCallback& error_callback) {
-  error_callback.Run(BluetoothAudioSink::ERROR_UNSUPPORTED_PLATFORM);
-}
-
 void BluetoothAdapterAndroid::RegisterAdvertisement(
     std::unique_ptr<BluetoothAdvertisement::Data> advertisement_data,
     const CreateAdvertisementCallback& callback,
     const AdvertisementErrorCallback& error_callback) {
   error_callback.Run(BluetoothAdvertisement::ERROR_UNSUPPORTED_PLATFORM);
 }
 
 BluetoothLocalGattService* BluetoothAdapterAndroid::GetGattService(
     const std::string& identifier) const {
   return nullptr;
@@ skipping 165 matching lines @@
   // TODO(scheib): Support filters crbug.com/490401
   NOTIMPLEMENTED();
   error_callback.Run(UMABluetoothDiscoverySessionOutcome::NOT_IMPLEMENTED);
 }
 
 void BluetoothAdapterAndroid::RemovePairingDelegateInternal(
     device::BluetoothDevice::PairingDelegate* pairing_delegate) {
 }
 
 }  // namespace device