Send NPAPI focus messages when web contents is blurred or focused

Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 135 matching lines @@
     ASSERT(isShadowInsertionPointFocusScopeOwner(shadowInsertionPoint));
     return FocusNavigationScope(shadowInsertionPoint.olderShadowRoot());
 }
 
 static inline void dispatchEventsOnWindowAndFocusedNode(Document* document, bool focused)
 {
     // If we have a focused node we should dispatch blur on it before we blur the window.
     // If we have a focused node we should dispatch focus on it after we focus the window.
     // https://bugs.webkit.org/show_bug.cgi?id=27105
 
+    if (document->focusedElement() && isHTMLPlugInElement(document->focusedElement()))
+        toHTMLPlugInElement(document->focusedElement())->setPluginFocus(focused);
+
     // Do not fire events while modal dialogs are up.  See https://bugs.webkit.org/show_bug.cgi?id=33962
     if (Page* page = document->page()) {
         if (page->defersLoading())
             return;
     }
 
     if (!focused && document->focusedElement()) {
         RefPtrWillBeRawPtr<Element> focusedElement(document->focusedElement());
         focusedElement->setFocus(false);
         focusedElement->dispatchBlurEvent(nullptr);
@@ skipping 772 matching lines @@
     return consumed;
 }
 
 void FocusController::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     visitor->trace(m_focusedFrame);
 }
 
 } // namespace blink