Roll "vpython".
Roll "vpython".

Roll "vpython" to git_revision:0577e51184b2da24260cbb01763eba51915b9755

TBR=40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org
BUG=chromium:764087
TEST=None

Change-Id: I117a0c2d368303805abb6426e3b9e4cbb8997b91
Reviewed-on: https://chromium-review.googlesource.com/688584
Reviewed-by: Daniel Jacques <8400006a9338a0893dca0101ad49838955bd6b2c@chromium.org>
Reviewed-by: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>
Commit-Queue: Daniel Jacques <8400006a9338a0893dca0101ad49838955bd6b2c@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools