Adam Barth 1f4416f87b Move microtask queue into tonic
Moving the microtask queue into tonic solves three problems:

1) Removes three levels of indirection when invoking microtask
callbacks.
2) Removes the sky/engine/dom directory entirely.
3) Removes the last client of the (inefficient) DartValue class.
2016-01-18 16:59:52 -08:00
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2015-12-29 22:27:18 -08:00
2016-01-18 16:59:52 -08:00