Roll Fuchsia SDK from 3c9d871a687a to a57be877c506

The AutoRoll server is located here: https://fuchsia-sdk-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:fuchsia_arm64_cast_audio;luci.chromium.try:fuchsia_x64_cast_audio
TBR=cr-fuchsia+bot@chromium.org

Change-Id: I4b55837b1bf092eb90f9a1a3ddcd7a9150fd33c9
Reviewed-on: https://chromium-review.googlesource.com/1121825
Commit-Queue: Fuchsia SDK Autoroller <fuchsia-sdk-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: Fuchsia SDK Autoroller <fuchsia-sdk-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#571794}

build/fuchsia/sdk.sha1

-3c9d871a687a9345100d0f59ccac58f87b1946c4
\ No newline at end of file
+a57be877c50655c6c0fa2d29735d32e5fd801215
\ No newline at end of file