[Clean up] Expose ConnectToServiceInsecurely as a BluetoothDevice API on all platforms.

components/proximity_auth/bluetooth_util.cc

 // Copyright 2014 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.
 
 #if !defined(OS_CHROMEOS)
 
 #include "components/proximity_auth/bluetooth_util.h"
 
 #include "base/callback.h"
 
-using device::BluetoothDevice;
-
 namespace proximity_auth {
 namespace bluetooth_util {
 namespace {
 const char kApiUnavailable[] = "This API is not implemented on this platform.";
 }  // namespace
 
 void SeekDeviceByAddress(const std::string& device_address,
                          const base::Closure& callback,
                          const ErrorCallback& error_callback,
                          base::TaskRunner* task_runner) {
   error_callback.Run(kApiUnavailable);
 }
 
-void ConnectToServiceInsecurely(
-    BluetoothDevice* device,
-    const device::BluetoothUUID& uuid,
-    const BluetoothDevice::ConnectToServiceCallback& callback,
-    const BluetoothDevice::ConnectToServiceErrorCallback& error_callback) {
-  error_callback.Run(kApiUnavailable);
-}
-
 }  // namespace bluetooth_util
 }  // namespace proximity_auth
 
 #endif  // !defined(OS_CHROMEOS)