I fixed the overlapping argument and fixed up the tests so that the actual sha1 hash is now passed (since the tool actually check now that the downloaded file hash matches)
BUG=
R=hinoka@google.com
Review URL: https://codereview.chromium.org/1285423002 .
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@296346 0039d316-1c4b-4281-b951-d872f2087c98