To enable Flash for a specific website, first open your Chrome browser and type chrome://settings/content in the address bar, then press enter. Then on the Content Settings page, scroll down and click the Flash button Make sure that the toggle is set to Ask first (recommended)
Next, navigate to the page or site where you wish to enable Flash, and click the lock icon to the right of the URL
How do I run Adobe Flash on Chrome?
原文：https://www.cnblogs.com/emanlee/p/12848001.html