Add git-core build dependency in preparation for merging cros.DEPS to DEPS

BUG=109475
TEST=maual: uninstalled git, run install-buid-deps.sh and gclient sync still works with cros.DEPS

Review URL: http://codereview.chromium.org/9348120

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@122185 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed