Set plugin focus by implementing HTMLPlugInElement::SetFocused.

third_party/WebKit/Source/core/html/HTMLFrameElementBase.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, 2008, 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 HTMLFrameElementBase_h
 #define HTMLFrameElementBase_h
 
 #include "core/CoreExport.h"
 #include "core/html/HTMLFrameOwnerElement.h"
+#include "public/platform/WebFocusType.h"
 
 namespace blink {
 
 class CORE_EXPORT HTMLFrameElementBase : public HTMLFrameOwnerElement {
  public:
   bool CanContainRangeEndPoint() const final { return false; }
 
   // FrameOwner overrides:
   ScrollbarMode ScrollingMode() const final { return scrolling_mode_; }
   int MarginWidth() const final { return margin_width_; }
   int MarginHeight() const final { return margin_height_; }
 
  protected:
   HTMLFrameElementBase(const QualifiedName&, Document&);
 
   void ParseAttribute(const AttributeModificationParams&) override;
   InsertionNotificationRequest InsertedInto(ContainerNode*) override;
   void DidNotifySubtreeInsertionsToDocument() final;
   void AttachLayoutTree(const AttachContext& = AttachContext()) override;
 
   void SetScrollingMode(ScrollbarMode);
   void SetMarginWidth(int);
   void SetMarginHeight(int);
 
  private:
   bool SupportsFocus() const final;
-  void SetFocused(bool) final;
+  void SetFocused(bool, WebFocusType) final;
 
   bool IsURLAttribute(const Attribute&) const final;
   bool HasLegalLinkAttribute(const QualifiedName&) const final;
   bool IsHTMLContentAttribute(const Attribute&) const final;
 
   bool AreAuthorShadowsAllowed() const final { return false; }
 
   void SetLocation(const String&);
   void SetNameAndOpenURL();
   bool IsURLAllowed() const;
   void OpenURL(bool replace_current_item = true);
 
   ScrollbarMode scrolling_mode_;
   int margin_width_;
   int margin_height_;
 
   AtomicString url_;
   AtomicString frame_name_;
 };
 
 inline bool IsHTMLFrameElementBase(const HTMLElement& element) {
   return isHTMLFrameElement(element) || isHTMLIFrameElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLFrameElementBase);
 
 }  // namespace blink
 
 #endif  // HTMLFrameElementBase_h