servo/servo — pull request #2930 by bjwbell (2014-07-26 09:21:49+00:00)
Title: Track rerender msgs

If the compositor outputs to a file:
* Track rerender msg ids sent from the compositor to the render tasks.
* Before outputting, wait until all rerender msgs are processed by the
render tasks.

Fixes issue https://github.com/servo/servo/issues/2871.