Depends on the browser and platform. WideVine support on Firefox for Linux is limited, one of the biggest effects of this is that some video platforms refuse to serve up high definition video to Firefox users on Linux. Netflix, for example, will only allow you to watch video at 720p on Firefox for Linux. The existing WideVine support comes directly from Google.
Open Addons an Themes, click on Plugins, by default you should see a line that says "Widevine Content Decryption Module provided by Google Inc." . Note the Google Inc. .
Fair, and I didn't know that or had forgotten it, but I think Firefox is still relevant to the parent's comment, and the context of the topic:
> No, especially not if you want to watch videos, the DRM plugin is a binary blob that only Google approved browsers get to run.
So it might be better to say that you don't need to be locked into Google's browser (or a fork of its OS base) in order to consume a wide variety of online content, and you can thus avoid this issue with Chrome extensions entirely. And at least with Firefox it is just a plugin, so presumably could be replaced with a binary blob from someone else if Google's influence became worrisome enough (and I do wonder, isn't it already worrisome enough??).