feat: add browser type to device descriptors

[mxschmitt]

Found two cases which were not directly clear to me:

• Samsung Galaxy S3 Android Browser 4: Already Chromium or still WebKit?
• Nokia Lumia 520: In Theory IE10. I would drop it since its a device from April 2013

Also not sure if we want to keep it directly associated in the device descriptors, because that would maybe lead to breaking the backwards compatibility since preferredBrowserType is not directly related to the BrowserContextOptions.

Fixes #3728

[pavelfeldman]

Samsung Galaxy S3 Android Browser 4: Already Chromium or still WebKit?
Nokia Lumia 520: In Theory IE10. I would drop it since its a device from April 2013

I think we should remove those ^^ from the list. Along with other devices older than 5 years old. Just to keep it in a good shape...

[pavelfeldman]

since preferredBrowserType is not directly related to the BrowserContextOptions

That's a good point. But I guess it is ok-ish. Our options are:

• Add the property as in the patch, a bit confusing, but works.
  • Optionally throw in case device and browser are incompatible
• Strip the property when user reaches for devices, do not throw

@dgozman wdyt?

[pavelfeldman]

Let's call it defaultBrowserType and leave your patch as is.