tree f6230e80de688f5c05c693980531fcb33432128e
parent 215c12ff93f89edcf42fa744e9767ff606d4df0f
author Rahul Chaudhry <rahulchaudhry@chromium.org> 1415220645 -0800
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1415925574 +0000

Run a dummy command in ChrootRunCommand to create a chroot if needed.

In ChrootRunCommand, if return_output is set, run a dummy command first to
make sure the chroot exists before running the actual command whose output
is desired.

BUG=chromium:429823
TEST=Ran build_tc.py with freshly setup chromeos sources without a chroot.

Change-Id: Icdd954671e172066f8fb3402d04174295b1aff61
Reviewed-on: https://chrome-internal-review.googlesource.com/182696
Reviewed-by: Luis Lozano <llozano@chromium.org>
Commit-Queue: Rahul Chaudhry <rahulchaudhry@google.com>
Tested-by: Rahul Chaudhry <rahulchaudhry@google.com>