Add comments setting emacs and vim tab width and expansion variables.
BUG=none
TEST=successful builds
Review URL: http://codereview.chromium.org/256059

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@28089 0039d316-1c4b-4281-b951-d872f2087c98
89 files changed