The size of `CGDisplay`

[daniel-abramov]

I've just checked the values which CGDisplay::pixels_high() and CGDisplay::pixels_wide() return (I wrote a simple test that calls CGDisplay::main() and then prints some properties of it. It seems that the returned values are not in pixels, but in points. I know that CGDisplay wrapper uses the correct functions CGDisplayPixelsHigh() and CGDisplayPixelsWide(), but apparently they don't return the size in pixels. Should we rename the functions in CGDisplay, so that the documentation and function names better reflect the actual way they work?

[jrmuizel]

I'm inclined to just leave the name matching the upstream name. It might be worth adding some documentation about this though.