Move container policy logic to frame owner classes.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights
  * reserved.
  *
  * 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 63 matching lines @@
   void SetNeedsPluginUpdate(bool needs_plugin_update) {
     needs_plugin_update_ = needs_plugin_update;
   }
   void UpdatePlugin();
 
   bool ShouldAccelerate() const;
 
   void RequestPluginCreationWithoutLayoutObjectIfPossible();
   void CreatePluginWithoutLayoutObject();
 
+  virtual Vector<WebParsedFeaturePolicyDeclaration> ConstructContainerPolicy()
+      const;
+
  protected:
   HTMLPlugInElement(const QualifiedName& tag_name,
                     Document&,
                     bool created_by_parser,
                     PreferPlugInsForImagesOption);
 
   // Node functions:
   void RemovedFrom(ContainerNode* insertion_point) override;
   void DidMoveToNewDocument(Document& old_document) override;
 
@@ skipping 104 matching lines @@
 
 inline bool IsHTMLPlugInElement(const HTMLElement& element) {
   return element.IsPluginElement();
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLPlugInElement);
 
 }  // namespace blink
 
 #endif  // HTMLPlugInElement_h