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# Cumulative Layout Shift Changelog

This is a list of changes to [Cumulative Layout Shift](https://web.dev/cls).

* Chrome 79
  * Metric is elevated to stable; changes in metric definition will be reported in this log.
* Chrome 77
  * Metric exposed via API: [Cumulative Layout Shift](https://web.dev/cls/) available via [Layout Instability API](https://github.com/WICG/layout-instability)