Remove FrameViewBase as base class of PluginView.

third_party/WebKit/Source/core/html/HTMLPlugInElement.cpp

 /**
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 86 matching lines @@
   HTMLFrameOwnerElement::Trace(visitor);
 }
 
 void HTMLPlugInElement::SetPlugin(PluginView* plugin) {
   if (plugin == plugin_)
     return;
 
   // Remove and dispose the old plugin if we had one.
   if (plugin_) {
     GetDocument().View()->RemovePlugin(plugin_);
-    DisposeWidgetSoon(plugin_);
+    DisposeSoon(plugin_);
   }
   plugin_ = plugin;
 
   // TODO(joelhockey): I copied the rest of this method from
   // HTMLFrameOwnerElement.  There may be parts that can be removed
   // such as the layoutPartItem.isNull check and DCHECKs.
   // Once widget tree is removed (FrameView::m_children), try to unify
   // this code with HTMLFrameOwnerElement::setWidget.
   LayoutPart* layout_part = ToLayoutPart(GetLayoutObject());
   LayoutPartItem layout_part_item = LayoutPartItem(layout_part);
@@ skipping 25 matching lines @@
       cache->ChildrenChanged(layout_part);
   }
   return plugin_.Release();
 }
 
 void HTMLPlugInElement::SetPersistedPlugin(PluginView* plugin) {
   if (persisted_plugin_ == plugin)
     return;
   if (persisted_plugin_) {
     persisted_plugin_->Hide();
-    DisposeWidgetSoon(persisted_plugin_.Release());
+    DisposeSoon(persisted_plugin_.Release());
   }
   persisted_plugin_ = plugin;
 }
 
 bool HTMLPlugInElement::RequestObjectInternal(
     const String& url,
     const String& mime_type,
     const Vector<String>& param_names,
     const Vector<String>& param_values) {
   if (url.IsEmpty() && mime_type.IsEmpty())
@@ skipping 535 matching lines @@
 
 void HTMLPlugInElement::LazyReattachIfNeeded() {
   if (!UseFallbackContent() && NeedsPluginUpdate() && GetLayoutObject() &&
       !IsImageType()) {
     LazyReattachIfAttached();
     SetPersistedPlugin(nullptr);
   }
 }
 
 }  // namespace blink