Update spec references to RFC 8446.

Change-Id: I03095ea46e32d41def4a444ff1c8c41409209294
Reviewed-on: https://chromium-review.googlesource.com/1185972
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Commit-Queue: David Benjamin <davidben@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#585486}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3889cfb9917e9714fd95c57e844c746a0b6a03e2
2 files changed