Calling focus() on an iframe should not trigger a 'focusout' event

Source/core/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, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2095 matching lines @@
         RefPtr<LocalFrame> frame(document().frame());
         if (!frame)
             return;
 
         // When focusing an editable element in an iframe, don't reset the selection if it already contains a selection.
         if (this == frame->selection().rootEditableElement())
             return;
 
         // FIXME: We should restore the previous selection if there is one.
         VisibleSelection newSelection = VisibleSelection(firstPositionInOrBeforeNode(this), DOWNSTREAM);
-        frame->selection().setSelection(newSelection);
+        // Passing DoNotSetFocus as this function is called after FocusController::setFocusedElement()
+        // and we don't want to change the focus to a new Element.
+        frame->selection().setSelection(newSelection, FrameSelection::DoNotSetFocus);
         frame->selection().revealSelection();
     } else if (renderer() && !renderer()->isWidget())
         renderer()->scrollRectToVisible(boundingBox());
 }
 
 void Element::blur()
 {
     cancelFocusAppearanceUpdate();
     if (treeScope().adjustedFocusedElement() == this) {
         Document& doc = document();
@@ skipping 1174 matching lines @@
 
 void Element::trace(Visitor* visitor)
 {
     if (hasRareData())
         visitor->trace(elementRareData());
 
     ContainerNode::trace(visitor);
 }
 
 } // namespace WebCore