Get rid of [Callback] extended attribute for parameters in IDL files

Source/bindings/scripts/CodeGenerator.pm

 #
 # WebKit IDL parser
 #
 # Copyright (C) 2005 Nikolas Zimmermann <wildfox@kde.org>
 # Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 # Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
 # Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 # Copyright (C) Research In Motion Limited 2010. All rights reserved.
+# Copyright (C) 2013 Samsung Electronics. All rights reserved.
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Library General Public
 # License as published by the Free Software Foundation; either
 # version 2 of the License, or (at your option) any later version.
 #
 # This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # Library General Public License for more details.
@@ skipping 61 matching lines @@
     }
 
     my $interfaces = $idlDocument->interfaces;
     foreach my $interface (@$interfaces) {
         print "Generating bindings code for IDL interface \"" . $interface->name . "\"...\n" if $verbose;
         $codeGenerator->GenerateInterface($interface, $defines);
         $codeGenerator->WriteData($interface, $useOutputDir, $useOutputHeadersDir);
     }
 }
 
+sub IsCallbackInterfaceFromFile
+{
+    my $object = shift;
+    my $interfaceName = shift;
+
+    my $idlFile = $object->IDLFileForInterface($interfaceName)
+        or die("Could NOT find IDL file for interface \"$interfaceName\"!\n");
+
+    open FILE, "<", $idlFile;
+    my @lines = <FILE>;
+    close FILE;
+
+    my $fileContents = join('', @lines);
+    return ($fileContents =~ /callback\s+interface\s+(\w+)/gs);
+}
+
 1;