Copy or print chat window text in Chrome

I keep encountering in increasing frequency these chat interfaces with disabled right-click, disabled marking (when I try to mark in order to copy, the mark usually doesn't stick) and even when I do manage to mark the text CTRL-C doesn't work.

I can save the HTML and then sift through it to get the chat contents or open it in IE and save as text file (as described here) but it's long and tedious to do that every time I want to save a chat for record.

Screenshot or printing the page to PDF doesn't help because it only saves a small part of the conversation.

I was wondering if there is a better way to do this (a script / utility / extension would also be acceptable, though I would prefer if it wasn't an extension as they hog memory).

I'm using Chrome on Windows 7.

There is an Chrome extension that can help you: RightToCopy

https://chrome.google.com/webstore/detail/righttocopy/plmcimdddlobkphnofejmeidjblideca

In Chrome Store, it says:

Enable right click, saving images, selecting/highlighting text, and copying text on pages that have disabled these features.