Roll Fuchsia SDK from 891299165362 to 891296491688

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

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;luci.chromium.try:fuchsia-x64-cast
TBR=cr-fuchsia+bot@chromium.org

Change-Id: I117a5cb0b4e7d28d3463b9d660763831da466a7a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1619642Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#661302}

build/fuchsia/linux.sdk.sha1

-8912991653629874496
+8912964916883958640
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-8913005544674679632
+8912967755899508384
\ No newline at end of file