bluetooth: macOS: Removing useless |.get()|

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 174 matching lines @@
   CBPeripheral* peripheral = _service.peripheral;
   [peripheral.delegate peripheral:peripheral
       didUpdateValueForCharacteristic:self.characteristic
                                 error:nil];
 }
 
 - (void)addDescriptorWithUUID:(CBUUID*)uuid {
   scoped_nsobject<MockCBDescriptor> descriptor_mock([[MockCBDescriptor alloc]
       initWithCharacteristic:self.characteristic
                       CBUUID:uuid]);
-  [_descriptors.get() addObject:descriptor_mock];
+  [_descriptors addObject:descriptor_mock];
 }
 
 - (CBUUID*)UUID {
-  return _UUID.get();
+  return _UUID;
 }
 
 - (CBCharacteristic*)characteristic {
   return ObjCCast<CBCharacteristic>(self);
 }
 
 - (CBService*)service {
   return _service;
 }
 
 - (CBCharacteristicProperties)properties {
   return _cb_properties;
 }
 
 - (NSArray*)descriptors {
   return _descriptors;
 }
 
 - (id)value {
-  return _value.get();
+  return _value;
 }
 
 - (BOOL)isNotifying {
   return _notifying;
 }
 
 @end