Remove spelling markers in disabled and readonly form elements

third_party/WebKit/Source/core/html/HTMLFormControlElement.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 127 matching lines @@
 
 void HTMLFormControlElement::attributeChanged(
     const AttributeModificationParams& params) {
   HTMLElement::attributeChanged(params);
   if (params.name == disabledAttr &&
       params.oldValue.isNull() != params.newValue.isNull()) {
     disabledAttributeChanged();
     if (params.reason == AttributeModificationReason::kDirectly &&
         isDisabledFormControl() && adjustedFocusedElementInTreeScope() == this)
       blur();
+  } else if (params.name == readonlyAttr &&

[tkent, 2017/02/03 00:09:58]

I think no reason to handle this in HTMLFormControlElement.  Move it to
TextControlElement.

+             params.oldValue.isNull() != params.newValue.isNull()) {
+    readonlyAttributeChanged();
   }
 }
 
 void HTMLFormControlElement::parseAttribute(
     const AttributeModificationParams& params) {
   const QualifiedName& name = params.name;
   if (name == formAttr) {
     formAttributeChanged();
     UseCounter::count(document(), UseCounter::FormAttribute);
   } else if (name == readonlyAttr) {
@@ skipping 476 matching lines @@
     const Element& source) {
   HTMLElement::copyNonAttributePropertiesFromElement(source);
   setNeedsValidityCheck();
 }
 
 void HTMLFormControlElement::associateWith(HTMLFormElement* form) {
   associateByParser(form);
 };
 
 }  // namespace blink