Make git_setup.py executable.
Make git_setup.py executable.

TBR=iannucci@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15254008

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@201336 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build