Bluetooth: macOS: Adding counter for service discovery callbacks.

device/bluetooth/test/mock_bluetooth_cbperipheral_mac.mm

 // 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/test/mock_bluetooth_cbperipheral_mac.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "device/bluetooth/test/bluetooth_test_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_cbcharacteristic_mac.h"
@@ skipping 65 matching lines @@
   _state = state;
   if (_state == CBPeripheralStateDisconnected) {
     _services.reset();
   }
 }
 
 - (void)discoverServices:(NSArray*)serviceUUIDs {
   if (_bluetoothTestMac) {
     _bluetoothTestMac->OnFakeBluetoothServiceDiscovery();
   }
-  [_delegate peripheral:self.peripheral didDiscoverServices:nil];
 }
 
 - (void)discoverCharacteristics:(NSArray*)characteristics
                      forService:(CBService*)service {
+  if (_bluetoothTestMac) {
+    _bluetoothTestMac->OnFakeBluetoothCharacteristicDiscovery();
+  }
 }
 
 - (void)discoverDescriptorsForCharacteristic:(CBCharacteristic*)characteristic {
   MockCBCharacteristic* mock_characteristic =
       ObjCCast<MockCBCharacteristic>(characteristic);
   [mock_characteristic discoverDescriptors];
 }
 
 - (void)readValueForCharacteristic:(CBCharacteristic*)characteristic {
   DCHECK(_bluetoothTestMac);
@@ skipping 31 matching lines @@
 }
 
 - (void)removeService:(CBService*)service {
   base::scoped_nsobject<CBService> serviceToRemove(service,
                                                    base::scoped_policy::RETAIN);
   DCHECK(serviceToRemove);
   [_services.get() removeObject:serviceToRemove];
   [self didModifyServices:@[ serviceToRemove ]];
 }
 
+- (void)mockDidDiscoverServices {
+  [_delegate peripheral:self.peripheral didDiscoverServices:nil];
+}
+
 - (void)mockDidDiscoverEvents {
-  [_delegate peripheral:self.peripheral didDiscoverServices:nil];
+  [self mockDidDiscoverServices];
   // BluetoothLowEnergyDeviceMac is expected to call
   // -[CBPeripheral discoverCharacteristics:forService:] for each services,
   // so -[<CBPeripheralDelegate peripheral:didDiscoverCharacteristicsForService:
   // error:] needs to be called for all services.
   for (CBService* service in _services.get()) {
     [_delegate peripheral:self.peripheral
         didDiscoverCharacteristicsForService:service
                                        error:nil];
     for (CBCharacteristic* characteristic in service.characteristics) {
       // After discovering services, BluetoothLowEnergyDeviceMac is expected to
@@ skipping 34 matching lines @@
   return ObjCCast<CBPeripheral>(self);
 }
 
 - (void)setNotifyValue:(BOOL)notification
      forCharacteristic:(CBCharacteristic*)characteristic {
   _bluetoothTestMac->OnFakeBluetoothGattSetCharacteristicNotification(
       notification == YES);
 }
 
 @end