Roll Fuchsia SDK from c29af1551ab7 to 4538a17f3a02

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: I58e94995d48d4493f5c3bb91ab7e2c7f241b9aa6
Reviewed-on: https://chromium-review.googlesource.com/1051867
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@{#557158}

build/fuchsia/sdk.sha1

-c29af1551ab794359f573ed6091e7822b98eccd0
+4538a17f3a0240b4fb27b809239f03c6d4184431
\ No newline at end of file