Update text field 'change' event logic to match to Firefox.

third_party/WebKit/Source/core/html/HTMLInputElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * 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 214 matching lines @@
   bool hasValidDataListOptions() const;
   void listAttributeTargetChanged();
   // Associated <datalist> options which match to the current INPUT value.
   HeapVector<Member<HTMLOptionElement>> filteredDataListOptions() const;
 
   HTMLInputElement* checkedRadioButtonForGroup();
   bool isInRequiredRadioButtonGroup();
 
   // Functions for InputType classes.
   void setNonAttributeValue(const String&);
+  void setNonAttributeValueByUserEdit(const String&);
   bool valueAttributeWasUpdatedAfterParsing() const {
     return m_valueAttributeWasUpdatedAfterParsing;
   }
   void updateView();
   bool needsToUpdateViewValue() const { return m_needsToUpdateViewValue; }
   void setInnerEditorValue(const String&) override;
 
   // For test purposes.
   void selectColorInColorChooser(const Color&);
   void endColorChooser();
@@ skipping 185 matching lines @@
   // element lives on.
   Member<HTMLImageLoader> m_imageLoader;
   Member<ListAttributeTargetObserver> m_listAttributeTargetObserver;
 
   FRIEND_TEST_ALL_PREFIXES(HTMLInputElementTest, RadioKeyDownDCHECKFailure);
 };
 
 }  // namespace blink
 
 #endif  // HTMLInputElement_h