Replace generic Dictionary with DictionaryPluginPlaceholderOptions

Source/core/core.gyp

 #
 # Copyright (C) 2009 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 769 matching lines @@
         '<(bindings_core_v8_output_dir)/V8InternalRuntimeFlags.cpp',
         '<(bindings_core_v8_output_dir)/V8InternalRuntimeFlags.h',
         '<(bindings_core_v8_output_dir)/V8LayerRect.cpp',
         '<(bindings_core_v8_output_dir)/V8LayerRect.h',
         '<(bindings_core_v8_output_dir)/V8LayerRectList.cpp',
         '<(bindings_core_v8_output_dir)/V8LayerRectList.h',
         '<(bindings_core_v8_output_dir)/V8RefCountedScriptWrappable.cpp',
         '<(bindings_core_v8_output_dir)/V8RefCountedScriptWrappable.h',
         '<(bindings_core_v8_output_dir)/V8InternalDictionary.cpp',
         '<(bindings_core_v8_output_dir)/V8InternalDictionary.h',
+        '<(bindings_core_v8_output_dir)/V8PluginPlaceholderOptions.cpp',
+        '<(bindings_core_v8_output_dir)/V8PluginPlaceholderOptions.h',
       ],
       'sources/': [
         ['exclude', 'testing/js'],
       ],
     },
   ],  # targets
 }