We should experiment with making the bottom toolbar disappear immediately on scroll rather than waiting the 3 seconds like the top toolbar does (for security reasons). There are two possible ways we could handle this:

- Via the renderer. In this case we would need to build a system to control both toolbars independently.

- Via the browser. We would just continue showing the android view and animate it to the renderer's toolbar position after the 3 seconds pass (similar to how JS modal dialogs are handled). This is unfortunately against our efforts to keep toolbar control in the renderer.