Bluetooth: macOS: Implement BluetoothRemoteGattCharacteristicMac::UnsubscribeFromNotifications

device/bluetooth/bluetooth_remote_gatt_characteristic.cc

Index: device/bluetooth/bluetooth_remote_gatt_characteristic.cc
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic.cc b/device/bluetooth/bluetooth_remote_gatt_characteristic.cc
index 3a8abb33b6ebf0b06ceb664cff99f77c08256b44..9443ba97abd8ec698c24f5ca1fca2e0b0323c610 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic.cc
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic.cc
@@ -278,15 +278,14 @@ void BluetoothRemoteGattCharacteristic::ExecuteStopNotifySession(
 // rid of the entire check, and run SubscribeToNotifications on all
 // platforms.
 //
-// TODO(http://crbug.com/633191): Remove OS_MACOSX from this check.
 // TODO(http://crbug.com/636270): Remove OS_WIN from this check.
-#if defined(OS_MACOSX) || defined(OS_WIN)
+#if defined(OS_WIN)
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&BluetoothRemoteGattCharacteristic::OnStopNotifySessionError,
                  GetWeakPtr(), session, callback,
                  BluetoothRemoteGattService::GATT_ERROR_NOT_SUPPORTED));
-#else   // !(defined(OS_MACOSX) || defined(OS_WIN))
+#else   // defined(OS_WIN))
   // Find the Client Characteristic Configuration descriptor.
   std::vector<BluetoothRemoteGattDescriptor*> ccc_descriptor =
       GetDescriptorsByUUID(BluetoothRemoteGattDescriptor::
@@ -309,7 +308,7 @@ void BluetoothRemoteGattCharacteristic::ExecuteStopNotifySession(
                  GetWeakPtr(), session, callback),
       base::Bind(&BluetoothRemoteGattCharacteristic::OnStopNotifySessionError,
                  GetWeakPtr(), session, callback));
-#endif  // defined(OS_MACOSX) || defined(OS_WIN)
+#endif  // defined(OS_WIN)
 }
 
 void BluetoothRemoteGattCharacteristic::CancelStopNotifySession(