GitLab

GetAppOutput relies on a platform-supplied shell interpreter to
exercise ProcessUtil's output handling codepaths
and the GetAppOutput tests rewritten to use it.

This doesn't work for Fuchsia, as packaged executables aren't
allowed to access other binaries that aren't included
in the package.

This CL defines a trivial test executable "test_child_process",
which behaves similar to "echo", and the GetAppOutput tests
are rewritten to use it.


Bug: 836341
Change-Id: If681b62f4ecf486a6b62387be0610fec6771ae4e
Reviewed-on: https://chromium-review.googlesource.com/1026796
Commit-Queue: Kevin Marshall <kmarshall@chromium.org>
Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Scott Graham <scottmg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553835}