Reapply the patch r191685 with fixing the regression issue.

Source/core/html/HTMLTextFormControlElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 988 matching lines @@
         if (node->isTextNode()) {
             Text* textNode = toText(node);
             size_t firstLineBreak = textNode->data().find('\n', isPivotNode ? pivotPosition.offsetInContainerNode() : 0);
             if (firstLineBreak != kNotFound)
                 return Position(textNode, firstLineBreak + 1);
         }
     }
     return endOfInnerText(textFormControl);
 }
 
+void HTMLTextFormControlElement::copyNonAttributePropertiesFromElement(const Element& source)
+{
+    const HTMLTextFormControlElement& sourceElement = static_cast<const HTMLTextFormControlElement&>(source);
+    m_lastChangeWasUserEdit = sourceElement.m_lastChangeWasUserEdit;
+    HTMLFormControlElement::copyNonAttributePropertiesFromElement(source);
+}
+
 } // namespace blink