[Feature]: Allow `URLPattern` for `page.waitForURL`

[louwers]

🚀 Feature Request

Right now page.waitForURL() accepts a string, RegExp or a function.

Now that URLPattern is supported by Node.js it makes sense to accept it as a parameter.

Example

await page.click('a.delayed-navigation');
await page.waitForURL(new URLPattern({pathname: "/widget1"});

Motivation

This is a much nicer to use API than the alternatives.

[pavelfeldman]

Stability 1.0 - Early development. Experimental features at this stage are unfinished and subject to substantial change.

[louwers]

Good point, but actually, it is marked as Stablity 1 with no specific sub-classification.

I don't think it is unstable, it's just new, and since it is a web platform API I doubt there will be any breaking changes.

Edit: all WPT tests are also passing.