bluetooth: mac: Removing #pragma clang diagnostic ignored "-Wpartial-availability"

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_cbservice_mac.h"
@@ skipping 123 matching lines @@
 
 - (void)didDiscoverCharactericsForAllServices {
   for (CBService* service in _services.get()) {
     [_delegate peripheral:self.peripheral
         didDiscoverCharacteristicsForService:service
                                        error:nil];
   }
 }
 
 - (void)didModifyServices:(NSArray*)invalidatedServices {
-  // -[CBPeripheralDelegate peripheral:didModifyServices:] is only available
-  // with 10.9. It is safe to call this method (even if chrome is running on
-  // 10.8) since WebBluetooth is enabled only with 10.10.
-  // TODO(crbug.com/653056)
   DCHECK(
       [_delegate respondsToSelector:@selector(peripheral:didModifyServices:)]);
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wpartial-availability"
   [_delegate peripheral:self.peripheral didModifyServices:invalidatedServices];
-#pragma clang diagnostic pop
 }
 
 - (NSUUID*)identifier {
   return _identifier.get();
 }
 
 - (NSString*)name {
   return _name.get();
 }
 
 - (NSArray*)services {
   return _services.get();
 }
 
 - (CBPeripheral*)peripheral {
   return ObjCCast<CBPeripheral>(self);
 }
 
 - (void)setNotifyValue:(BOOL)notification
      forCharacteristic:(CBCharacteristic*)characteristic {
   _bluetoothTestMac->OnFakeBluetoothGattSetCharacteristicNotification();
 }
 
 @end