Move container policy logic to frame owner classes.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2004, 2006, 2009 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef HTMLFrameElement_h
 #define HTMLFrameElement_h
 
+#include "core/CoreExport.h"
 #include "core/html/HTMLFrameElementBase.h"
 
 namespace blink {
 
-class HTMLFrameElement final : public HTMLFrameElementBase {
+class CORE_EXPORT HTMLFrameElement final : public HTMLFrameElementBase {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   DECLARE_NODE_FACTORY(HTMLFrameElement);
 
   bool HasFrameBorder() const { return frame_border_; }
 
   bool NoResize() const;
 
+  Vector<WebParsedFeaturePolicyDeclaration> ConstructContainerPolicy()
+      const override;
+
  private:
   explicit HTMLFrameElement(Document&);
 
   void AttachLayoutTree(const AttachContext& = AttachContext()) override;
 
   bool LayoutObjectIsNeeded(const ComputedStyle&) override;
   LayoutObject* CreateLayoutObject(const ComputedStyle&) override;
 
   void ParseAttribute(const AttributeModificationParams&) override;
 
   bool frame_border_;
   bool frame_border_set_;
 };
 
 }  // namespace blink
 
 #endif  // HTMLFrameElement_h