Bluetooth: macOS: Adding counter for service discovery callbacks.

device/bluetooth/bluetooth_low_energy_device_mac.h

 // 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.
 
 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_DEVICE_MAC_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_DEVICE_MAC_H_
 
 #if defined(OS_IOS)
 #import <CoreBluetooth/CoreBluetooth.h>
 #else  // !defined(OS_IOS)
@@ skipping 89 matching lines @@
   static std::string GetPeripheralHashAddress(CBPeripheral* peripheral);
 
  private:
   friend class BluetoothAdapterMac;
   friend class BluetoothAdapterMacTest;
   friend class BluetoothLowEnergyPeripheralBridge;
   friend class BluetoothRemoteGattServiceMac;
   friend class BluetoothTestMac;
   friend class BluetoothRemoteGattServiceMac;
 
+  // Calls the macOS to discover primary services.
+  void DiscoverPrimaryServices();
+
   // Sends notification if this device is ready with all services discovered.
   void SendNotificationIfDiscoveryComplete();
 
   // Returns the Bluetooth adapter.
   BluetoothAdapterMac* GetMacAdapter();
 
   // Returns the CoreBluetooth Peripheral.
   CBPeripheral* GetPeripheral();
 
   // Returns BluetoothRemoteGattServiceMac based on the CBService.
@@ skipping 13 matching lines @@
   // Whether the device is connectable.
   bool connectable_;
 
   // The peripheral's identifier, as returned by [CBPeripheral identifier].
   std::string identifier_;
 
   // A local address for the device created by hashing the peripheral
   // identifier.
   std::string hash_address_;
 
+  // Increases each time -[CBPeripheral discoverServices:] is called, and

[ortuno, 2017/01/23 06:12:39]

nit optional: I would move this comment to DiscoverPrimaryServices.

+  // decreases each time DidDiscoverPrimaryServices() is called. Once the
+  // value is set to 0, characteristics and properties are discovered.
+  int discovery_pending_count_;
+
   DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyDeviceMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_LOW_ENERGY_DEVICE_MAC_H_