bluetooth: macOS: Remove c-style casting

device/bluetooth/bluetooth_remote_gatt_service_mac.mm

 // Copyright 2016 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_remote_gatt_service_mac.h"
 
 #import <CoreBluetooth/CoreBluetooth.h>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 11 matching lines @@
     CBService* service,
     bool is_primary)
     : bluetooth_device_mac_(bluetooth_device_mac),
       service_(service, base::scoped_policy::RETAIN),
       is_primary_(is_primary),
       is_discovery_complete_(false),
       discovery_pending_count_(0) {
   uuid_ = BluetoothAdapterMac::BluetoothUUIDWithCBUUID([service_.get() UUID]);
   identifier_ = base::SysNSStringToUTF8(
       [NSString stringWithFormat:@"%s-%p", uuid_.canonical_value().c_str(),
-                                 (void*)service_]);
+                                 service_.get()]);
 }
 
 BluetoothRemoteGattServiceMac::~BluetoothRemoteGattServiceMac() {}
 
 std::string BluetoothRemoteGattServiceMac::GetIdentifier() const {
   return identifier_;
 }
 
 BluetoothUUID BluetoothRemoteGattServiceMac::GetUUID() const {
   return uuid_;
@@ skipping 197 matching lines @@
     const BluetoothRemoteGattServiceMac& service) {
   const BluetoothLowEnergyDeviceMac* bluetooth_device_mac_ =
       static_cast<const BluetoothLowEnergyDeviceMac*>(service.GetDevice());
   return out << "<BluetoothRemoteGattServiceMac "
              << service.GetUUID().canonical_value() << "/" << &service
              << ", device: " << bluetooth_device_mac_->GetAddress() << "/"
              << bluetooth_device_mac_ << ">";
 }
 
 }  // namespace device