Flash Player is pre-installed in Google Chrome

I have downloaded latest version of Flash Player and Google Chrome. Adobe website says Flash Player is pre-installed in my Google Chrome browser. I have already followed the instruction to enabled "Allow sites to run Flash" but it doesn't work. I still can't play videos which require Flash.

When I checked it on Adobe website, my Chrome browser can play the animation provided there to test whether flash player have installed or not. But as I state above, I can't play videos which require flash player on other websites.