Boot to Android
"Boot an Android userspace" means that a developer could run Android on a standard Kernel.org kernel rather than having to fetch one Google's customized version.
That could be handy for many programmers--the large number using Linux in electronics devices with memory and processor power limits, for example. And Mozilla, with its B2G (Boot to Gecko) project for a Linux-based browser operating system, also stands to benefit from the integration. It's currently using the Android open-source project (AOSP) software.
Linux and Android, together at last | Heykuki News