Bluetooth: macOS: Spelling consistency

device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm

Index: device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm b/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
index 67c4c46a0808cccf6c6d1390c259795d762c0e98..92d7847cbce849c9eb856e22f3737c560f0e3624 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_mac.mm
@@ -210,9 +210,9 @@ void BluetoothRemoteGattCharacteristicMac::SubscribeToNotifications(
     BluetoothRemoteGattDescriptor* ccc_descriptor,
     const base::Closure& callback,
     const ErrorCallback& error_callback) {
-  DCHECK(subscribe_to_notification_callback_.first.is_null());
-  DCHECK(subscribe_to_notification_callback_.second.is_null());
-  subscribe_to_notification_callback_ =
+  DCHECK(subscribe_to_notification_callbacks_.first.is_null());
+  DCHECK(subscribe_to_notification_callbacks_.second.is_null());
+  subscribe_to_notification_callbacks_ =
       std::make_pair(callback, error_callback);
   [GetCBPeripheral() setNotifyValue:YES
                   forCharacteristic:cb_characteristic_.get()];
@@ -294,8 +294,8 @@ void BluetoothRemoteGattCharacteristicMac::DidWriteValue(NSError* error) {
 
 void BluetoothRemoteGattCharacteristicMac::DidUpdateNotificationState(
     NSError* error) {
-  PendingNotifyCallback reentrant_safe_callbacks;
-  reentrant_safe_callbacks.swap(subscribe_to_notification_callback_);
+  PendingNotifyCallbacks reentrant_safe_callbacks;
+  reentrant_safe_callbacks.swap(subscribe_to_notification_callbacks_);
   if (error) {
     VLOG(1) << "Bluetooth error while modifying notification state for "
                "characteristic, domain: "