BUG=chromium-os:21286
TEST=Ran 'git-try' with/without --root=src, and with/without .gclient file

Review URL: http://codereview.chromium.org/8174009

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@105229 0039d316-1c4b-4281-b951-d872f2087c98