Re-encode several extensions as CRX3.

Bug: 740715
Change-Id: I9953fb3fbd98e5076a5bc470e1e6edc114493e2e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1515690Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#648729}