Non-visible Flash content blocked in September; Flash fully deprecated by December.
Starting with Chrome 53, due out early next month, the browser will automatically block tiny and non-visible Flash content, such as tracking and fingerprint cookies that are notoriously hard to shake off. Then, with Chrome 55 in December, Flash will be deprecated entirely, with exceptions for "sites which only support Flash." In both cases HTML5 is expected to take up the reins.
Regards,
Rudi
If your absence does not affect them, your presence didn't matter.