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

Source/bindings/derived_sources.gyp

 #
 # Copyright (C) 2013 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:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 152 matching lines @@
           '../core/scripts/preprocessor.pm',
           '<!@pymod_do_main(supplemental_idl_files <@(idl_files))',
         ],
         'outputs': [
           # FIXME:  The .cpp file should be in webkit/bindings once
           # we coax GYP into supporting it (see 'action' below).
           '<(SHARED_INTERMEDIATE_DIR)/webcore/bindings/V8<(RULE_INPUT_ROOT).cpp',
           '<(SHARED_INTERMEDIATE_DIR)/webkit/bindings/V8<(RULE_INPUT_ROOT).h',
         ],
         'variables': {
+          # IDL include paths. The generator will search recursively for IDL
+          # files under these locations.
           'generator_include_dirs': [
-            '--include', '../modules/filesystem',
-            '--include', '../modules/indexeddb',
-            '--include', '../modules/mediasource',
-            '--include', '../modules/mediastream',
-            '--include', '../modules/navigatorcontentutils',
-            '--include', '../modules/notifications',
-            '--include', '../modules/webaudio',
-            '--include', '../modules/webdatabase',
-            '--include', '../modules/webmidi',
-            '--include', '../core/css',
-            '--include', '../core/dom',
-            '--include', '../core/fileapi',
-            '--include', '../core/html',
-            '--include', '../core/page',
-            '--include', '../core/plugins',
-            '--include', '../core/storage',
-            '--include', '../core/svg',
-            '--include', '../core/testing',
-            '--include', '../core/workers',
-            '--include', '../core/xml',
+            '--include', '../modules',
+            '--include', '../core',

[do-not-use, 2013/04/26 16:48:16]

The generator will look for IDL files recursively in these include dirs (using
File::Find in perl). The issue was that the include dirs were very specific and
incomplete. Therefore, some IDL interfaces could not be resolved.

We could just make add the missing dirs but I decided to include top-level dirs
instead so that we don't need to update this list all the time.

             '--include', '<(SHARED_INTERMEDIATE_DIR)/webkit',
           ],
         },
         'msvs_cygwin_shell': 0,
         # FIXME:  Note that we put the .cpp files in webcore/bindings
         # but the .h files in webkit/bindings.  This is to work around
         # the unfortunate fact that GYP strips duplicate arguments
         # from lists.  When we have a better GYP way to suppress that
         # behavior, change the output location.
         'action': [
@@ skipping 16 matching lines @@
           '--additionalIdlFiles',
           '<(webcore_test_support_idl_files)',
           '<(RULE_INPUT_PATH)',
           '<@(preprocessor)',
         ],
         'message': 'Generating binding from <(RULE_INPUT_PATH)',
       }],
     },
   ],
 }