The size of the fullscreen window is reset whenever we leave fullscreen mode

[felipeerias]

Steps to Reproduce

1. Play a video in e.g. YouTube
2. open fullscreen mode
3. change the size of the fullscreen window to e.g. 3X
4. leave fullscren mode
5. open again fullscreen mode

Note: the video keeps playing the whole time.

Current Behavior

The fullscreen window has the default size.

Expected Behavior

The fullscreen window has the last size that we selected (3X).

Possible Solution

Store the size of the fullscreen window and use it as the default when entering fullscreen mode.

[haanhvu]

I'll work on this