Separate the generated files from core and modules to their own sub-dirs.

Source/bindings/generated.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 91 matching lines @@
         'python',
         'scripts/generate_global_constructors.py',
         '--idl-files-list',
         '<(main_interface_idl_files_list)',
         '--global-objects-file',
         '<(bindings_output_dir)/GlobalObjects.pickle',
         '--write-file-only-if-changed',
         '<(write_file_only_if_changed)',
         '--',
         'Window',
-        '<(blink_output_dir)/WindowConstructors.idl',
+        '<(core_output_dir)/WindowConstructors.idl',
         'SharedWorkerGlobalScope',
-        '<(blink_output_dir)/SharedWorkerGlobalScopeConstructors.idl',
+        '<(core_output_dir)/SharedWorkerGlobalScopeConstructors.idl',
         'DedicatedWorkerGlobalScope',
-        '<(blink_output_dir)/DedicatedWorkerGlobalScopeConstructors.idl',
+        '<(core_output_dir)/DedicatedWorkerGlobalScopeConstructors.idl',
         'ServiceWorkerGlobalScope',
-        '<(blink_output_dir)/ServiceWorkerGlobalScopeConstructors.idl',
+        '<(modules_output_dir)/ServiceWorkerGlobalScopeConstructors.idl',
        ],
        'message': 'Generating IDL files for constructors on global objects',
       }]
   },
 ################################################################################
   {
     'target_name': 'generated_idls',
     'type': 'none',
     'dependencies': [
       '../core/core_generated.gyp:generated_testing_idls',
       'global_constructors_idls',
       ],
   }
 ################################################################################
   ],  # targets
 }