33173e6c50
Picks up performance improvements related to the webcomponents polyfill. Change-Id: Iebc4bdb4a1be2b44f2208ac0802f71788131432a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/143384 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>