Brian Birtles 5b145a6de4 Bug 1253476 - Add remove events; r=boris,bzbarsky
This patch introduces the machinery for dispatching remove events but does not
actually cause removing to do anything to the output of the animation beyond
updating its replaceState member.

The expected behavior is defined in:

  https://drafts.csswg.org/web-animations-1/#removing-replaced-animations

And the corresponding IDL members are defined in:

  https://drafts.csswg.org/web-animations-1/#animation
  https://drafts.csswg.org/web-animations-1/#enumdef-animationreplacestate

Tests for these events are added in the next patch in this series.

Differential Revision: https://phabricator.services.mozilla.com/D30322

--HG--
extra : moz-landing-system : lando
2019-05-20 05:48:29 +00:00
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