Roll Fuchsia SDK from 019153792455 to 6490ad40d973

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: Ib90cd7eb2b549624b50dc226875733855ea2a22d
Reviewed-on: https://chromium-review.googlesource.com/c/1454422Reviewed-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@{#629114}

build/fuchsia/linux.sdk.sha1

-01915379245585ee8737c654f69fb0e44b31e85d
\ No newline at end of file
+6490ad40d973625dc27bf59b3ade9323a5edb814
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-9629e2afe58b5b8bd75d194c9d06de5203018ee5
\ No newline at end of file
+4aaf262c95ceab6d163bf7e6411b31f91135fc85
\ No newline at end of file