Make git 2.7.4 the default version
Make git 2.7.4 the default version

R=mmoss@chromium.org, dnj@chromium.org
BUG=595883

Review URL: https://codereview.chromium.org/1843363002 .

git-svn-id: fd409f4bdeea2bb50a5d34bb4d4bfc2046a5a3dd@299580 0039d316-1c4b-4281-b951-d872f2087c98

CoherentLabs/depot_tools,primiano/depot_tools,primiano/depot_tools,primiano/depot_tools,CoherentLabs/depot_tools