Remove most of Widget (FrameViewBase) class from HTMLPlugInElement.

third_party/WebKit/Source/web/WebPluginDocument.cpp

 /*
  * Copyright (C) 2010 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 26 matching lines @@
 
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 WebPlugin* WebPluginDocument::plugin() {
   if (!isPluginDocument())
     return 0;
   PluginDocument* doc = unwrap<PluginDocument>();
   WebPluginContainerImpl* container =
-      toWebPluginContainerImpl(doc->pluginWidget());
+      toWebPluginContainerImpl(doc->pluginView());
   return container ? container->plugin() : 0;
 }
 
 WebPluginDocument::WebPluginDocument(PluginDocument* elem)
     : WebDocument(elem) {}
 
 DEFINE_WEB_NODE_TYPE_CASTS(WebPluginDocument,
                            isDocumentNode() &&
                                constUnwrap<Document>()->isPluginDocument());
 
 WebPluginDocument& WebPluginDocument::operator=(PluginDocument* elem) {
   m_private = elem;
   return *this;
 }
 
 WebPluginDocument::operator PluginDocument*() const {
   return static_cast<PluginDocument*>(m_private.get());
 }
 
 }  // namespace blink