Another thing to add is built in plugins so I don't have to re download flash player when I want to watch videos but on other browsers I don't need to download flash player to watch videos or pla gamse on the same sites. Also an extention so I can use this on chrome os.
(…) add is built in plugins so I don't have to re download flash player when I want to watch videos (…)
Vivaldi cant do it because of licensing restrictions.
I wonder how much effort it would really be worth to design-in a flash player (along with a way of delivering its occasional updates) when Flash program's own end-of-life is already slated for only 3 years out in 2020? I think Vivaldi's answer would be "too much effort". Many of those browsers that do still have it are already moving in the direction of deprecating it and focusing solely on HTML5, if not in their stable builds, at least in their experimental builds.
Just keep it in mind, in some time no more flash will be seen around, start to learn to live without it. Nobody is going to remake it.