bindings: Pass is_null flag to attribute setters when they are nullable

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 126 matching lines @@
   String SanitizeValue(const String&) const;
 
   String LocalizeValue(const String&) const;
 
   const String& SuggestedValue() const;
   void SetSuggestedValue(const String&);
 
   void SetEditingValue(const String&);
 
   double valueAsDate(bool& is_null) const;
-  void setValueAsDate(double, ExceptionState&);
+  void setValueAsDate(double, bool is_null, ExceptionState&);
 
   double valueAsNumber() const;
   void setValueAsNumber(double,
                         ExceptionState&,
                         TextFieldEventBehavior = kDispatchNoEvent);
 
   String ValueOrDefaultLabel() const;
 
   // This function dispatches 'input' event for non-textfield types. Callers
   // need to handle any DOM structure changes by event handlers, or need to
   // delay the 'input' event with EventQueueScope.
   void SetValueFromRenderer(const String&);
 
   unsigned selectionStartForBinding(bool&, ExceptionState&) const;
   unsigned selectionEndForBinding(bool&, ExceptionState&) const;
   String selectionDirectionForBinding(ExceptionState&) const;
-  void setSelectionStartForBinding(unsigned, ExceptionState&);
-  void setSelectionEndForBinding(unsigned, ExceptionState&);
+  void setSelectionStartForBinding(unsigned, bool is_null, ExceptionState&);
+  void setSelectionEndForBinding(unsigned, bool is_null, ExceptionState&);
   void setSelectionDirectionForBinding(const String&, ExceptionState&);
   void setSelectionRangeForBinding(unsigned start,
                                    unsigned end,
                                    ExceptionState&);
   void setSelectionRangeForBinding(unsigned start,
                                    unsigned end,
                                    const String& direction,
                                    ExceptionState&);
 
   bool LayoutObjectIsNeeded(const ComputedStyle&) final;
@@ skipping 252 matching lines @@
   // element lives on.
   Member<HTMLImageLoader> image_loader_;
   Member<ListAttributeTargetObserver> list_attribute_target_observer_;
 
   FRIEND_TEST_ALL_PREFIXES(HTMLInputElementTest, RadioKeyDownDCHECKFailure);
 };
 
 }  // namespace blink
 
 #endif  // HTMLInputElement_h