3ac1ee9150
build.py was only forwarding to ninja.py, so this CL just copies ninja.py over build.py and removes ninja.py. Change-Id: I7b13c8fb17dbc05825c35b3d806cd950bf1b953e Reviewed-on: https://dart-review.googlesource.com/51520 Reviewed-by: Alexander Thomas <athom@google.com> Commit-Queue: Zach Anderson <zra@google.com>