Firefox Mobile option to block or warn about video over cellular/metered connection

[moz201]

It would be Extremely Helpful™ if Firefox Mobile  had an option (in Settings) to completely block downloading or streaming video over cellular/metered connections, and/or to display a confirmation dialog before starting.

Occasionally, the Wi-Fi on my Android device turns off or disconnects without my realizing, and I think (OK, assume) that I am downloading videos over Wi-Fi, only to find out afterwards that my cellular data plan has been eaten up.

Note that this is not a request to block AutoPlay. I am talking about situations where the user explicitly chooses to play a video without first checking to see that they are connected to Wi-Fi.

Thank you for your consideration.

[Jon]

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