The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/54f61462b4e9f09f37ec4760181464b74a3a31af

commit 54f61462b4e9f09f37ec4760181464b74a3a31af
Author: Sergey Ulanov <sergeyu@chromium.org>
Date: Tue Jul 24 20:27:47 2018

[Fuchsia] Disable GPU in webrunner

Now ContextProvider will run Context process with --disable-gpu.
GPU process doesn't work correctly on Fuchsia yet.

Bug:  850743 , 867052
Change-Id: Ifde22a36beb69f187be07b7fd075a0f8d807bcdf
Reviewed-on: https://chromium-review.googlesource.com/1147550
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577663}
[modify] https://crrev.com/54f61462b4e9f09f37ec4760181464b74a3a31af/webrunner/service/context_provider_impl.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/033428c94555f465b620805d61bd5e9b580e64e3

commit 033428c94555f465b620805d61bd5e9b580e64e3
Author: Sergey Ulanov <sergeyu@chromium.org>
Date: Tue Aug 21 17:04:31 2018

[Fuchsia] Don't pass --disable-gpu to webrunner context process

Previously --disable-gpu process was passed to context process
to prevent it from starting GPU process. It no longer disables
GPU process, but GPU process should not crash once
https://crrev.com/r/1178754 lands.

Bug: 867052,  874533 
Change-Id: If2baf7aa50dd9ccb6ee5442d079f50c1908ed72c
Reviewed-on: https://chromium-review.googlesource.com/1178881
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584794}
[modify] https://crrev.com/033428c94555f465b620805d61bd5e9b580e64e3/webrunner/service/context_provider_impl.cc

Is there any work remaining on this?