This way engineers can still enjoy the perf benefit while someone fixes the
buildbot stdio parsing issue.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/3334017

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@59127 0039d316-1c4b-4281-b951-d872f2087c98