[Frameworks roll] Roll to 473308404 piper revision

Change-Id: Id4321489cc06c96687bea13e12b8de7ac364a91f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3888279
Bot-Commit: Internal Frameworks Autoroller <bling-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Internal Frameworks Autoroller <bling-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#10453508}