Roll Fuchsia SDK from 70e6933bf0e1 to 304368135b8a

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: I790f32af9bc563089695e92d609298a1e1d11b23
Reviewed-on: https://chromium-review.googlesource.com/1025120Reviewed-by: Fuchsia SDK Autoroller <fuchsia-sdk-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: Fuchsia SDK Autoroller <fuchsia-sdk-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#552991}

build/fuchsia/sdk.sha1

-70e6933bf0e19e3c8d65fc63d01c719f236aceb6
\ No newline at end of file
+304368135b8a384f8f8883eb24a04a61364cac6d
\ No newline at end of file