* Accessibility: Make the native toolbox item communicate that it is a button.
* Accessibility: If an item is toggled, mark it as selected for accessibility
* Accessibility: Make the toolbox a toolbar for accessibility
* Accessibility: Mark the bottom sheet as a menu for accessibility
* Fix typo, AccessibilityRole, not AccessibleRole
* Statement fix
* Appease the linter
* Fix linting errors for real this time
Contributing all buttons in one place goes against the designs that we
set out at the beginning of the project's rewrite and that multiple of
us have been following since then.
This abstraction represents an action which can go anywhere in a toolbox (be
that the main toolbar or the overflow menu) and it's platform independent.
It does not depend on Redux, thus making it stateless, which facilitates its use
in stateful button implementations as well as stateless ones.