Summary:
- Add return parameter to `createTouch` method: stack of node. This reference will be used to retrieve the final tree structure to be sent back to desktop app.
- `Touch` now keeps every step in component tree (I have concerned for app performance here)
- Edit test to reflect changes
Note:
- `path` will also be returned to keep backward compatibility with older server (desktop) side
Reviewed By: adityasharat
Differential Revision: D21040429
fbshipit-source-id: 6c2b9792378bf08b19fbbda1d2381df8c357170c
d593409ec4