BrowserPlugin/WebView - Move plugin lifetime to DOM

Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 343 matching lines @@
     frameView->setScrollbarModes(horizontalScrollbarMode, verticalScrollbarMode, horizontalLock, verticalLock);
 
     setView(frameView);
 
     if (backgroundColor.alpha())
         frameView->updateBackgroundRecursively(backgroundColor, transparent);
 
     if (isMainFrame)
         frameView->setParentVisible(true);
 
-    if (ownerRenderer())
-        ownerRenderer()->setWidget(frameView);
+    if (ownerRenderer()) {
+        HTMLFrameOwnerElement* owner = ownerElement();
+        ASSERT(owner);
+        owner->setWidget(frameView);
+    }
 
     if (HTMLFrameOwnerElement* owner = ownerElement())
         view()->setCanHaveScrollbars(owner->scrollingMode() != ScrollbarAlwaysOff);
 }
 
 
 void LocalFrame::countObjectsNeedingLayout(unsigned& needsLayoutObjects, unsigned& totalObjects, bool& isPartial)
 {
     RenderObject* root = view()->layoutRoot();
     isPartial = true;
@@ skipping 218 matching lines @@
 {
     if (!m_host)
         return 0;
 
     double ratio = m_host->deviceScaleFactor();
     ratio *= pageZoomFactor();
     return ratio;
 }
 
 } // namespace WebCore