Remove the ENABLE_NOSNIFF compile-time flag.

Tools/Scripts/webkitperl/FeatureList.pm

 # Copyright (C) 2012 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
@@ skipping 347 matching lines @@
 
     { option => "navigator-content-utils", desc => "Toggle Navigator Content Utils support",
       define => "ENABLE_NAVIGATOR_CONTENT_UTILS", default => (isBlackBerry() || isEfl()), value => \$registerProtocolHandlerSupport },
 
     { option => "netscape-plugin-api", desc => "Toggle Netscape Plugin API support",
       define => "ENABLE_NETSCAPE_PLUGIN_API", default => 1, value => \$netscapePluginAPISupport },
 
     { option => "network-info", desc => "Toggle Network Info support",
       define => "ENABLE_NETWORK_INFO", default => (isEfl() || isBlackBerry()), value => \$networkInfoSupport },
 
-    { option => "nosniff", desc => "Toggle support for 'X-Content-Type-Options: nosniff'",
-      define => "ENABLE_NOSNIFF", default => 0, value => \$nosniffSupport },
-
     { option => "notifications", desc => "Toggle Notifications support",
       define => "ENABLE_NOTIFICATIONS", default => isBlackBerry(), value => \$notificationsSupport },
 
     { option => "orientation-events", desc => "Toggle Orientation Events support",
       define => "ENABLE_ORIENTATION_EVENTS", default => isBlackBerry(), value => \$orientationEventsSupport },
 
     { option => "page-visibility-api", desc => "Toggle Page Visibility API support",
       define => "ENABLE_PAGE_VISIBILITY_API", default => (isBlackBerry() || isEfl()), value => \$pageVisibilityAPISupport },
 
     { option => "performance-timeline", desc => "Toggle Performance Timeline support",
@@ skipping 101 matching lines @@
     { option => "xslt", desc => "Toggle XSLT support",
       define => "ENABLE_XSLT", default => 1, value => \$xsltSupport },
 );
 
 sub getFeatureOptionList()
 {
     return @features;
 }
 
 1;