Don't run debug mode for now, we don't have a debug build stored on gcs
Don't run debug mode for now, we don't have a debug build stored on gcs

Extract the sdk to the same path as we would normally build.

Delete build dir on startup to ensure we don't have any leftover artifacts.

R=sigmund@google.com
BUG=

Review URL: https://chromiumcodereview.appspot.com//689813003

dart-lang/package-bots