Ensure clean layout before calling plainText() (flat tree version)

third_party/WebKit/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 655 matching lines @@
     return dragImageBuilder.createImage(opacity);
 }
 
 String LocalFrame::selectedText() const
 {
     return selection().selectedText();
 }
 
 String LocalFrame::selectedTextForClipboard() const
 {
+    if (!document())
+        return emptyString();
+
+    // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
+    // needs to be audited.  See http://crbug.com/590369 for more details.
+    document()->updateStyleAndLayoutIgnorePendingStylesheets();
+
     return selection().selectedTextForClipboard();
 }
 
 PositionWithAffinity LocalFrame::positionForPoint(const IntPoint& framePoint)
 {
     HitTestResult result = eventHandler().hitTestResultAtPoint(framePoint);
     Node* node = result.innerNodeOrImageMapImage();
     if (!node)
         return PositionWithAffinity();
     LayoutObject* layoutObject = node->layoutObject();
@@ skipping 172 matching lines @@
         m_frame->client()->frameBlameContext()->Enter();
 }
 
 ScopedFrameBlamer::~ScopedFrameBlamer()
 {
     if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
         m_frame->client()->frameBlameContext()->Leave();
 }
 
 } // namespace blink