Summary: These will, eventually, need to be moved to the new bridge and so must become standalone things. For *NativeArray, this is almost just moving them out into their own .h/.cpp files. The *NativeMaps are updated to be hybrids instead of countables (in addition to getting their own .h/.cpp).
Reviewed By: mhorowitz
Differential Revision: D3325169
fbshipit-source-id: 40cfcab92b3fb2310bcd4de8f39e82f85d404abd
This is an early release and there are several things that are known
not to work if you're porting your iOS app to Android.
See the Known Issues guide on the website.
We will work with the community to reach platform parity with iOS.
