Reasonable people will disagree... but no, probably not. This is a feature which websites can choose to use in the same way that websites can choose to use notifications. Even if you dislike the fact that web browsers provide the option, it's the website itself that's actively choosing to impose on you.

Now, the counterpoint to this argument is that the feature in question will most likely further strengthen Google's position as the market leader and lock out new independent browsers. This is certainly true and similar logic has indeed been employed in cases like the Microsoft antitrust case. With that being said, Google still has that extra layer of abstraction sitting between it and the actual mechanism of action (i.e.: independent website owners who want DRM). Think of it like the Uber of anti-trust law.