Clean forward declaration in public

public/web/WebBindings.h

 /*
  * 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 28 matching lines @@
 namespace v8 {
 class Value;
 template <class T> class Handle;
 template <class T> class Local;
 }
 
 namespace blink {
 
 class WebArrayBuffer;
 class WebArrayBufferView;
-class WebDragData;
 class WebElement;
 class WebNode;
 class WebRange;
 
 // A haphazard collection of functions for dealing with plugins.
 class WebBindings {
 public:
     // NPN Functions ------------------------------------------------------
     // These are all defined in npruntime.h and are well documented.
 
@@ skipping 125 matching lines @@
     BLINK_EXPORT static void popExceptionHandler();
 
     // Conversion utilities to/from V8 native objects and NPVariant wrappers.
     BLINK_EXPORT static void toNPVariant(v8::Local<v8::Value>, NPObject* root, NPVariant* result);
     BLINK_EXPORT static v8::Handle<v8::Value> toV8Value(const NPVariant*);
 };
 
 } // namespace blink
 
 #endif