Some extra cflags are needed for cups on OpenBSD.

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/8345001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106115 0039d316-1c4b-4281-b951-d872f2087c98

printing/printing.gyp

@@ -238,6 +238,11 @@
                   ],
                 },
               }],
+              [ 'OS == "openbsd"', {
+                'cflags': [
+                  '<!@(python cups_config_helper.py --cflags)',
+                ],
+              }],
             ],
           },
         }],