1. Open Google Chrome.
  2. In the upper right hand part of the window click the 3 vertical dots next to your profile.
  3. Select "Delete Browsing Data"
  4. Make sure "Time Range" is set to "All time", and make sure both "Cookies and other site data" and "Cached images and files" are checked.  Click Delete.
  5. Completely quit/close out of Chrome.
  6. Restart Chrome and all of your cookies and cache should be cleared.