Aaron Lehmann d4bbf5d640 Clean up ProgressStatus ...

- Rename to Broadcaster

- Document exported types

- Change Wait function to just wait. Writing a message to the writer and
  adding the writer to the observers list are now handled by separate
  function calls.

- Avoid importing logrus (the condition where it was used should never
  happen, anyway).

- Make writes non-blocking

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Upstream-commit: 26c9b585042ac7dce8db83478a69fd01a4b003d7
Component: engine

2015-08-27 13:22:08 -07:00

components/engine

Clean up ProgressStatus

2015-08-27 13:22:08 -07:00

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