Followup to https://codereview.chromium.org/189913020/ ("gclient: print a warning if a dep would get deleted or moved in the future")

BUG=skia:1638

Review URL: https://codereview.chromium.org/225403015

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@268944 0039d316-1c4b-4281-b951-d872f2087c98