If you’ve ever tried to save your credentials for an HTTP basic auth form in Chrome, you’ve run into problems. Chrome won’t let you save the credentials natively. You might read a few articles about mixed results or the feature working in previous Chrome builds, but that’s not the way to solve your problem.
The easiest solution is to open up Firefox or IE, go to your HTTP basic auth site, log in, and save the password in FF/IE. Once the password is saved in that browser, go back to Chrome, and tell it to import the saved passwords from the other browser. It will properly import the credentials and will auto-populate the HTTP basic auth popup. It takes some extra work, and it certainly shouldn’t be so difficult, but this trick will get you where you need to go.