UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3674.0 Safari/537.36

Steps to reproduce the problem:

What is the expected behavior?

What went wrong?
Add ability to detect double click on tab to extensions API, please.

This ability will allow user to launch any kind of action on user selected tab or tabs, and the great thing is that he will be able to very quickly select tabs he needs by double clicking on them.

For example, there was Tab Mix Plus add-on in old Firefox, which allowed unprecedented convenience in operations with tabs, partly due to its ability to detect various clicks on tabs – see screenshot.

I, personally, want double click on tab to close all tabs to the right. There is an extension that can do that by pressing extension’s button, and there is a standard menu item to do that, but the fastest possible way is by double clicking on tab I need (without the need to move mouse to menu item or to extension’s button).

Another example is to scroll to top by double clicking on tab (somewhat similar to browsers in phones).

Yet another example is Google’s own Chrome Toolbox https://chrome.google.com/webstore/detail/chrome-toolbox-by-google/fjccknnhdnkbanjilpjddjhmkghmachn?hl=en which allowed closing tabs by double click.

WebStore page: 

Did this work before? N/A 

Chrome version: 73.0.3674.0  Channel: canary
OS Version: 10.0
Flash Version:
 

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