Use apt-get to install Dart instead of reading the .deb-file directly
Use apt-get to install Dart instead of reading the .deb-file directly

R=kustermann@google.com
BUG=

Review URL: https://codereview.chromium.org//669623003

dart-archive/dart_docker,donny-dont/dart_docker,donny-dont/dart_docker,dart-archive/dart_docker,donny-dont/dart_docker,dart-archive/dart_docker