Send NPAPI focus messages when web contents is blurred or focused

Source/core/html/HTMLPlugInElement.cpp

 /**
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
  *
  * 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 423 matching lines @@
 }
 
 NPObject* HTMLPlugInElement::getNPObject()
 {
     ASSERT(document().frame());
     if (!m_NPObject)
         m_NPObject = document().frame()->script().createScriptObjectForPluginElement(this);
     return m_NPObject;
 }
 
+void HTMLPlugInElement::setPluginFocus(bool focused)
+{
+    Widget* focusedWidget = existingPluginWidget();
+    // NPAPI flash requires to receive messages when web contents focus changes.
+    if (getNPObject() && focusedWidget)
+        focusedWidget->setFocus(focused, WebFocusTypeNone);
+}
+
 bool HTMLPlugInElement::isImageType()
 {
     if (m_serviceType.isEmpty() && protocolIs(m_url, "data"))
         m_serviceType = mimeTypeFromDataURL(m_url);
 
     if (LocalFrame* frame = document().frame()) {
         KURL completedURL = document().completeURL(m_url);
         return frame->loader().client()->objectContentType(completedURL, m_serviceType, shouldPreferPlugInsForImages()) == ObjectContentImage;
     }
 
@@ skipping 210 matching lines @@
     return hasAuthorShadowRoot();
 }
 
 void HTMLPlugInElement::lazyReattachIfNeeded()
 {
     if (!useFallbackContent() && !usePlaceholderContent() && needsWidgetUpdate() && renderer() && !isImageType())
         lazyReattachIfAttached();
 }
 
 }