From the linked article
Another rather interesting aspect to note is that Polymer's latest versions support both Shadow DOM v0 and v1 APIs, but for some reason, Google still uses Polymer 1.0 with the deprecated API.
I read this as Google continuing to use the old ( probably draft) API instead of the actual released version.
From the linked article Another rather interesting aspect to note is that Polymer's latest versions support both Shadow DOM v0 and v1 APIs, but for some reason, Google still uses Polymer 1.0 with the deprecated API. I read this as Google continuing to use the old ( probably draft) API instead of the actual released version.