UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Steps to reproduce the problem:
I'm not sure if this is a bug or a feature request, but here goes... I would like to use declarativeContent.RequestContentScript for two main reasons:

1. Inject a content script only when necessary
2. Avoid the "Read and change all your data on the websites you visit" permissions warning that scares a lot of people off from installing your extension

What is the expected behavior?
I was hoping by using the activeTab permission, I would be able to inject the content script into the active tab, but that doesn't seem to be the case.

What went wrong?
In order for me to inject a content script into the active tab, I would have to add the <all_urls> permission, which would also give off the "Read and change all your data on the websites you visit" warning that I'm trying to avoid.

I hope with the activeTab permission we would be able to inject content scripts into the active tab using declarativeContent.RequestContentScript.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 66.0.3359.181  Channel: n/a
OS Version: 10.0
Flash Version: