Accidentally replaced driver for integrated webcam (XPS 15 9550) and changed device type?

Today, I wanted to use an application called Zadig, which replaces the drivers for USB type devices. However, I accidentally replaced the driver for the integrated webcam! Applications like Skype will no longer recognize the webcam. Additionally, after checking the device manager, the integrated webcam is now located under USB devices... My computer thinks it is a USB device now. I uninstalled the driver and deleted the driver software, and restarted the computer. However, it just reinstalled the incorrect driver, and it is still under the USB category in device manager. I cannot seem to find the integrated webcam driver  for the XPS 15 9550 on the dell website. Can somebody please help me out?

Thank you!