Don't show caret when containing element doesn't have focus

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3313 matching lines @@
         // Create the AXObject cache in a focus change because Chromium relies on it.
         if (AXObjectCache* cache = axObjectCache())
             cache->handleFocusedUIElementChanged(oldFocusedNode.get(), newFocusedNode.get());
     }
 
     if (!focusChangeBlocked)
         page()->chrome().focusedNodeChanged(m_focusedNode.get());
 
 SetFocusedNodeDone:
     updateStyleIfNeeded();
+    if (Frame* frame = this->frame())
+        frame->selection()->didChangeFocus();
     return !focusChangeBlocked;
 }
 
 void Document::getFocusableNodes(Vector<RefPtr<Node> >& nodes)
 {
     updateLayout();
 
     for (Node* node = firstChild(); node; node = NodeTraversal::next(node)) {
         if (node->isFocusable())
             nodes.append(node);
@@ skipping 1879 matching lines @@
 {
     return DocumentLifecycleNotifier::create(this);
 }
 
 DocumentLifecycleNotifier* Document::lifecycleNotifier()
 {
     return static_cast<DocumentLifecycleNotifier*>(ScriptExecutionContext::lifecycleNotifier());
 }
 
 } // namespace WebCore