Recent Commits to firefox-csshacks:master

menubar in main toolbar: rewrite to use grid layout

Show autohiding toolbars when a window modal dialog is open.

Toolbar layout properties, notably --urlbar-container-height, is
re-computed when window modal dialog is closed and the values would be
totally incorrect if the toolbars are hidden at that time. This fixes #582
and likely several other issues as well.

hide tabs toolbar: Hide sidebar launcher splitter when vertical tabs are enabled

This prevents activating window resizing cursor appearing when fullscreen on linux.

autohide tabstoolbar: Make vertical tabs stay expanded while dragging tab

autohide tabstoolbar v2: Add a hover target pseudo-element to capture hovering

Previously we were showing tabs toolbar when the whole toolbox became hovered
which would make using bookmarks and navigation toolbars pretty annoying.

Deprecate window_control_force_linux_system_style.css