Set plugin focus by implementing HTMLPlugInElement::SetFocused.

third_party/WebKit/Source/core/dom/ContainerNode.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2013 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
@@ skipping 1009 matching lines @@
         StyleChangeReasonForTracing::CreateWithExtraData(
             StyleChangeReason::kPseudoClass, StyleChangeExtraData::g_focus));
   }
   if (IsElementNode() && ToElement(this)->ChildrenOrSiblingsAffectedByFocus())
     ToElement(this)->PseudoStateChanged(CSSSelector::kPseudoFocus);
 
   LayoutTheme::GetTheme().ControlStateChanged(*GetLayoutObject(),
                                               kFocusControlState);
 }
 
-void ContainerNode::SetFocused(bool received) {
+void ContainerNode::SetFocused(bool received, WebFocusType focus_type) {
   // Recurse up author shadow trees to mark shadow hosts if it matches :focus.
   // TODO(kochi): Handle UA shadows which marks multiple nodes as focused such
   // as <input type="date"> the same way as author shadow.
   if (ShadowRoot* root = ContainingShadowRoot()) {
     if (root->GetType() != ShadowRootType::kUserAgent)
-      OwnerShadowHost()->SetFocused(received);
+      OwnerShadowHost()->SetFocused(received, focus_type);
   }
 
   // If this is an author shadow host and indirectly focused (has focused
   // element within its shadow root), update focus.
   if (IsElementNode() && GetDocument().FocusedElement() &&
       GetDocument().FocusedElement() != this) {
     if (ToElement(this)->AuthorShadowRoot())
       received =
           received && ToElement(this)->AuthorShadowRoot()->delegatesFocus();
   }
 
   if (IsFocused() == received)
     return;
 
-  Node::SetFocused(received);
+  Node::SetFocused(received, focus_type);
 
   FocusStateChanged();
 
   if (GetLayoutObject() || received)
     return;
 
   // If :focus sets display: none, we lose focus but still need to recalc our
   // style.
   if (IsElementNode() && ToElement(this)->ChildrenOrSiblingsAffectedByFocus())
     ToElement(this)->PseudoStateChanged(CSSSelector::kPseudoFocus);
@@ skipping 423 matching lines @@
     return true;
 
   if (node->IsElementNode() && ToElement(node)->Shadow())
     return true;
 
   return false;
 }
 #endif
 
 }  // namespace blink