What is "chrome-extension://"

Question

I found the some strange <script/> tags on a site:

<script src="chrome-extension://lifbcibllhkdhoafpjfnlhfpfgnpldfl/document_iterator.js"></script>
<script src="chrome-extension://lifbcibllhkdhoafpjfnlhfpfgnpldfl/find_proxy.js"></script>
...

I haven't been able to find much information on this, but I highly doubt this is actually related to Google Chrome since this site in particular is still using <table>s for layout, and the source in question was retrieved with curl not a graphical web browser.

So,

1. What on earth is this?
2. What is chrome-extension://
3. Why is it using lifbcibllhkdhoafpjfnlhfpfgnpldfl as a directory name
4. Why is it pretending to be valid URL to a javascript file?
5. Why would I need find_proxy or document_iterator

---

Solved. As far as I know...

chrixian was right, It seems that only on this and a few select other pages, someone had re-saved them from Chrome's source-view with the Skype extension installed.

Thanks everyone for all your help, +1's for all! enjoy!

Answer 1

That is actually Skype Click to Call chrome extension.

Manage and view it using this link chrome://extensions/?id=lifbcibllhkdhoafpjfnlhfpfgnpldfl

Answer 2

If you are using cURL to get the page, you're getting the HTML as it exists on the server--so I think a safe assumption would be: the author of the page initially saved the page from Chrome, he had an extension installed that inserted these script tages and lastly he didn't remove the script tags for one reason or another before putting the page on the server.