Revert of Update of change event for datetime input type

Source/core/html/shadow/DateTimeEditElement.cpp

 /*
  * Copyright (C) 2012 Google 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 676 matching lines @@
         }
         setNeedsStyleRecalc();
     }
 }
 
 AtomicString DateTimeEditElement::localeIdentifier() const
 {
     return m_editControlOwner ? m_editControlOwner->localeIdentifier() : nullAtom;
 }
 
-void DateTimeEditElement::fieldDidChangeValueByKeyboard()
-{
-    if (m_editControlOwner)
-        m_editControlOwner->editControlDidChangeValueByKeyboard();
-}
-
 void DateTimeEditElement::readOnlyStateChanged()
 {
     updateUIState();
 }
 
 void DateTimeEditElement::resetFields()
 {
     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
         m_fields[fieldIndex]->removeEventHandler();
     m_fields.shrink(0);
@@ skipping 83 matching lines @@
 {
     DateTimeFieldsState dateTimeFieldsState;
     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
         m_fields[fieldIndex]->populateDateTimeFieldsState(dateTimeFieldsState);
     return dateTimeFieldsState;
 }
 
 } // namespace WebCore
 
 #endif