[tor-bugs] #7256 [Firefox Patch Issues]: Explore alternatives to fixed window sizes

[Tor Bug Tracker & Wiki]

#7256: Explore alternatives to fixed window sizes
----------------------------------+-----------------------------------------
 Reporter:  mikeperry             |          Owner:  mikeperry
     Type:  project               |         Status:  new      
 Priority:  normal                |      Milestone:           
Component:  Firefox Patch Issues  |        Version:           
 Keywords:  tbb-fingerprinting    |         Parent:           
   Points:                        |   Actualpoints:           
----------------------------------+-----------------------------------------
 Right now, we set the size of new Tor Browser windows such that their
 content area is a 200x100 multiple. We also lie to content that the entire
 desktop resolution is this size.

 However, this potentially leaks information for users who maximize their
 browser windows, as such windows will no longer be rounded.

 We could play with zooming such that maximized windows do not reveal
 Firefox decoration sizes. We could also set the zoom level automatically
 such that we end up with a content window size of a 200x100 multiple as
 well.

 Not sure how complicated this will be. See also #7255 for a potentially
 simpler stopgap.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7256>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online