Old Editors' drafts from the Web Performance Working Group.
See instead: http://w3c.github.io/navigation-timing/ http://w3c.github.io/page-visibility/ http://w3c.github.io/animation-timing/ http://w3c.github.io/hr-time/ http://w3c.github.io/beacon/ http://w3c.github.io/resource-hints/ http://w3c.github.io/performance-timeline/
Web Performance tests can be found in web-platforms-tests.
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