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

third_party/WebKit/Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 2458 matching lines @@
 String Internals::selectedHTMLForClipboard()
 {
     if (!frame())
         return String();
 
     return frame()->selection().selectedHTMLForClipboard();
 }
 
 String Internals::selectedTextForClipboard()
 {
-    if (!frame())
+    if (!frame() || !frame()->document())
         return String();
 
+    // Clean layout is required for extracting plain text from selection.
+    frame()->document()->updateStyleAndLayoutIgnorePendingStylesheets();
+
     return frame()->selection().selectedTextForClipboard();
 }
 
 void Internals::setVisualViewportOffset(int x, int y)
 {
     if (!frame())
         return;
 
     frame()->host()->visualViewport().setLocation(FloatPoint(x, y));
 }
@@ skipping 126 matching lines @@
 
 ClientRect* Internals::visualRect(Node* node)
 {
     if (!node || !node->layoutObject())
         return ClientRect::create();
 
     return ClientRect::create(FloatRect(node->layoutObject()->visualRect()));
 }
 
 } // namespace blink