This is a simple extension that allows the user to modify the Content Security Policy (CSP) of web pages.
Warning: improper use of this extension can diminish the security of your browser. Do not use unless you really know what you’re doing.
You can install directly from the Google Chrome webstore.
To edit the configuration, go to chrome://extensions and click Options
under Content Security Policy Override.
The text area in the Options automatically saves as you edit.