Add support for action- and rule-specific 'message' fields. Review URL: http://codereview.chromium.org/42232
Add support for action- and rule-specific 'message' fields.
Review URL: http://codereview.chromium.org/42232
old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google