Adam Barth 54d5068b86 Move snapshot to //flutter/lib/snapshot (#2905)
This change disentangles the build for the snapshotter from the main engine
build. Also, we now have all the Dart files for dart:ui in the same directory.
2016-08-10 15:33:11 -07:00
..
2016-08-09 13:52:15 -07:00