Revert "Fix outside_chroot_common to match crostestutils." This reverts commit 9c505210e92977025cada76602dd092979022964. Hoping this will greenify the tree. BUG=none TEST=none Review URL: http://codereview.chromium.org/6791024 Change-Id: Ia3dea5e534d6b736309b52643a8fd092b98b42f1