[Cronet] Disable flaky UrlRequestTest.UploadCancel*Sync tests on Fuchsia.

Bug: 954372
Change-Id: Id148ead661409576491fec9b37226e975098ef76
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1575115
Reviewed-by: Wez <wez@chromium.org>
Commit-Queue: Misha Efimov <mef@chromium.org>
Auto-Submit: Misha Efimov <mef@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652684}
1 file changed