INPUT element: Stop saving/restoring values of input[type=hidden].

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 @@
   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 value_attribute_was_updated_after_parsing_;
-  }
   void UpdateView();
   bool NeedsToUpdateViewValue() const { return needs_to_update_view_value_; }
   void SetInnerEditorValue(const String&) override;
 
   // For test purposes.
   void SelectColorInColorChooser(const Color&);
   void EndColorChooser();
 
   String DefaultToolTip() const override;
 
@@ skipping 163 matching lines @@
   // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-checked
   unsigned is_checked_ : 1;
   // https://html.spec.whatwg.org/multipage/forms.html#concept-input-checked-dirty-flag
   unsigned dirty_checkedness_ : 1;
   unsigned is_indeterminate_ : 1;
   unsigned is_activated_submit_ : 1;
   unsigned autocomplete_ : 2;  // AutoCompleteSetting
   unsigned has_non_empty_list_ : 1;
   unsigned state_restored_ : 1;
   unsigned parsing_in_progress_ : 1;
-  unsigned value_attribute_was_updated_after_parsing_ : 1;
   unsigned can_receive_dropped_files_ : 1;
   unsigned should_reveal_password_ : 1;
   unsigned needs_to_update_view_value_ : 1;
   unsigned is_placeholder_visible_ : 1;
   Member<InputType> input_type_;
   Member<InputTypeView> input_type_view_;
   // The ImageLoader must be owned by this element because the loader code
   // assumes that it lives as long as its owning element lives. If we move the
   // loader into the ImageInput object we may delete the loader while this
   // element lives on.
   Member<HTMLImageLoader> image_loader_;
   Member<ListAttributeTargetObserver> list_attribute_target_observer_;
 
   FRIEND_TEST_ALL_PREFIXES(HTMLInputElementTest, RadioKeyDownDCHECKFailure);
 };
 
 }  // namespace blink
 
 #endif  // HTMLInputElement_h