Roll Fuchsia SDK from 1a0b0112a4d8 to 644d5b59c068

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: I71bbea5dedcf93d83713ed9de9b54764a5ec4053
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1525805Reviewed-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@{#641135}

build/fuchsia/linux.sdk.sha1

-1a0b0112a4d84c0cb918a11ef77a2ae239202c56
\ No newline at end of file
+644d5b59c0682caf40ef946b411fa699a9d95cdc
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-fce931f17c4ef82fcfe47617ced644319ea21ece
\ No newline at end of file
+e34cc49eab53073ada98d13d2991fa6b92ddebd6
\ No newline at end of file