Native UI for Firefox on Android

“In terms of architecture, one of the key points of the native
UI is to move Gecko and XUL out of Firefox’s startup path on
Android. This way, the UI can start up and respond to user
interaction immediately while Gecko and XUL load and run on a
separate thread. The communication between Gecko and the native UI
then happens through a simple message system. This means we’re
replacing Electrolysis with a lighter architecture that brings
similar benefits.