Roll Fuchsia SDK from ad9a4c298fd6 to 4e72358ab2c4

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=master.tryserver.chromium.linux:fuchsia_arm64_cast_audio;master.tryserver.chromium.linux:fuchsia_x64_cast_audio
TBR=cr-fuchsia+bot@chromium.org

Change-Id: I829c73a630d817100f0632aeac194fdbc1e09d0a
Reviewed-on: https://chromium-review.googlesource.com/1014503
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@{#551187}

build/fuchsia/sdk.sha1

-ad9a4c298fd6d26256f34b073ce2868e45c24561
\ No newline at end of file
+4e72358ab2c48db8c421a672dc6abee3e7f59bcf
\ No newline at end of file