Set plugin focus by implementing HTMLPlugInElement::SetFocused.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2009, 2011 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 185 matching lines @@
 
 bool HTMLAreaElement::LayoutObjectIsFocusable() const {
   HTMLImageElement* image = ImageElement();
   if (!image || !image->GetLayoutObject() ||
       image->GetLayoutObject()->Style()->Visibility() != EVisibility::kVisible)
     return false;
 
   return SupportsFocus() && Element::tabIndex() >= 0;
 }
 
-void HTMLAreaElement::SetFocused(bool should_be_focused) {
+void HTMLAreaElement::SetFocused(bool should_be_focused,
+                                 WebFocusType focus_type) {
   if (IsFocused() == should_be_focused)
     return;
 
-  HTMLAnchorElement::SetFocused(should_be_focused);
+  HTMLAnchorElement::SetFocused(should_be_focused, focus_type);
 
   HTMLImageElement* image_element = this->ImageElement();
   if (!image_element)
     return;
 
   LayoutObject* layout_object = image_element->GetLayoutObject();
   if (!layout_object || !layout_object->IsImage())
     return;
 
   ToLayoutImage(layout_object)->AreaElementFocusChanged(this);
 }
 
 void HTMLAreaElement::UpdateFocusAppearance(
     SelectionBehaviorOnFocus selection_behavior) {
   GetDocument().UpdateStyleAndLayoutTreeForNode(this);
   if (!IsFocusable())
     return;
 
   if (HTMLImageElement* image_element = this->ImageElement())
     image_element->UpdateFocusAppearance(selection_behavior);
 }
 
 }  // namespace blink