Bluetooth: macOS: Implement BluetoothRemoteGattCharacteristicMac::UnsubscribeFromNotifications

device/bluetooth/test/mock_bluetooth_cbcharacteristic_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/test/mock_bluetooth_cbcharacteristic_mac.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "device/bluetooth/bluetooth_gatt_characteristic.h"
 #include "device/bluetooth/test/mock_bluetooth_cbdescriptor_mac.h"
@@ skipping 140 matching lines @@
 
 - (void)simulateGattNotifySessionStarted {
   _notifying = YES;
   CBPeripheral* peripheral = _service.peripheral;
   [peripheral.delegate peripheral:peripheral
       didUpdateNotificationStateForCharacteristic:self.characteristic
                                             error:nil];
 }
 
 - (void)simulateGattNotifySessionFailedWithError:(NSError*)error {
+  _notifying = NO;
   CBPeripheral* peripheral = _service.peripheral;
   [peripheral.delegate peripheral:peripheral
       didUpdateNotificationStateForCharacteristic:self.characteristic
+                                            error:error];
+}
+
+- (void)simulateGattNotifySessionStopped {
+  _notifying = NO;
+  CBPeripheral* peripheral = _service.peripheral;
+  [peripheral.delegate peripheral:peripheral
+      didUpdateNotificationStateForCharacteristic:self.characteristic
+                                            error:nil];
+}
+
+- (void)simulateGattNotifySessionStoppedWithError:(NSError*)error {
+  _notifying = NO;
+  CBPeripheral* peripheral = _service.peripheral;
+  [peripheral.delegate peripheral:peripheral
+      didUpdateNotificationStateForCharacteristic:self.characteristic
                                             error:error];
 }
 
 - (void)simulateGattCharacteristicChangedWithValue:(NSData*)value {
   _value.reset([value copy]);
   CBPeripheral* peripheral = _service.peripheral;
   [peripheral.delegate peripheral:peripheral
       didUpdateValueForCharacteristic:self.characteristic
                                 error:nil];
 }
@@ skipping 31 matching lines @@
 
 - (NSData*)value {
   return _value.get();
 }
 
 - (BOOL)isNotifying {
   return _notifying;
 }
 
 @end