MotionMark relies on interop functionality difference and causes different scores

[dtapuska]

Reported against: Version 1.3.1

MotionMark requires you to rotate your device into landscape mode and the size of the canvas is determined via media queries.

On Chrome and Firefox media queries and window.screen are adjusted based on rotation. There is no resolution on https://github.com/w3c/csswg-drafts/issues/5204

So it ends up that MotionMark can choose a different size of canvas in Chrome or Safari on the exact same device.

Can we either adjust the media query to take into account of this or change the media query to be based on the viewport size?