Merge 60984 - 2010-06-10 Tony Chang <tony@chromium.org>...

WebCore/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1290 matching lines @@
 
     // If the stylesheets have already been loaded we can reliably check isFocusable.
     // If not, we continue and set the focused node on the focus controller below so
     // that it can be updated soon after attach. 
     if (doc->haveStylesheetsLoaded()) {
         doc->updateLayoutIgnorePendingStylesheets();
         if (!isFocusable())
             return;
     }
 
-    if (Page* page = doc->page())
+    RefPtr<Node> protect;
+    if (Page* page = doc->page()) {
+        // Focus and change event handlers can cause us to lose our last ref.
+        protect = this;
         page->focusController()->setFocusedNode(this, doc->frame());
+    }
 
     // Setting the focused node above might have invalidated the layout due to scripts.
     doc->updateLayoutIgnorePendingStylesheets();
 
     if (!isFocusable()) {
         ensureRareData()->setNeedsFocusAppearanceUpdateSoonAfterAttach(true);
         return;
     }
         
     cancelFocusAppearanceUpdate();
@@ skipping 209 matching lines @@
 {
     // Only create renderers for SVG elements whose parents are SVG elements, or for proper <svg xmlns="svgNS"> subdocuments.
     if (child->isSVGElement())
         return child->hasTagName(SVGNames::svgTag) || isSVGElement();
 
     return Node::childShouldCreateRenderer(child);
 }
 #endif
 
 } // namespace WebCore