servo: Merge #18422 - style: Remove stale todo about handling scrollb…

…ars in viewport units (from emilio:stale-todo); r=bholley

This is effectively not going to happen, per
w3c/csswg-drafts#1766

Source-Repo: https://github.com/servo/servo
Source-Revision: 9c0abfea239077bc490ed8a2d4a7c32ba782942d

servo/components/style/gecko/media_queries.rs

@@ -156,11 +156,8 @@ impl Device {
 
  /// Returns the current viewport size in app units.
  pub fn au_viewport_size(&self) -> Size2D<Au> {
- unsafe {
- // TODO(emilio): Need to take into account scrollbars.
- let area = &self.pres_context().mVisibleArea;
- Size2D::new(Au(area.width), Au(area.height))
- }
+ let area = &self.pres_context().mVisibleArea;
+ Size2D::new(Au(area.width), Au(area.height))
  }
 
  /// Returns the current viewport size in app units, recording that it's been