FBTF: Remove unnecessary STL #includes from src/webkit.

webkit/glue/plugins/plugin_instance.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO: Need to deal with NPAPI's NPSavedData.
 //       I haven't seen plugins use it yet.
 
 #ifndef WEBKIT_GLUE_PLUGIN_PLUGIN_INSTANCE_H__
 #define WEBKIT_GLUE_PLUGIN_PLUGIN_INSTANCE_H__
 
 #include <map>
-#include <set>
 #include <stack>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "gfx/native_widget_types.h"
 #include "gfx/point.h"
@@ skipping 328 matching lines @@
   }
  private:
   scoped_refptr<PluginInstance> instance_;
   DISALLOW_COPY_AND_ASSIGN(ScopedCurrentPluginEvent);
 };
 #endif
 
 } // namespace NPAPI
 
 #endif  // WEBKIT_GLUE_PLUGIN_PLUGIN_INSTANCE_H__