Fix indentation for emacs and add missing keyword.

Closing brackets are now properly indented with the opening
bracket.
Also adds "cflags_cc" in the list of keywords

BUG=
Review URL: https://codereview.chromium.org/560263003/
R=gavinp@chromium.org

Patch from Fabrice de Gans-Riberi <fdegans@chromium.org>!


git-svn-id: http://gyp.googlecode.com/svn/trunk@1975 78cadc50-ecff-11dd-a971-7dbc132099af