Fix incorrect validation of DebugInformationFormat
Fix incorrect validation of DebugInformationFormat

BUG=70043

Review URL: http://codereview.chromium.org/6297009
old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google,old8xp/gyp_from_google