HTMLTableCellElement type changed from signed to unsinged

Source/core/html/HTMLTableCellElement.h

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. 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
@@ skipping 20 matching lines @@
 
 namespace blink {
 
 class CORE_EXPORT HTMLTableCellElement final : public HTMLTablePartElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
     DECLARE_ELEMENT_FACTORY_WITH_TAGNAME(HTMLTableCellElement);
 
     int cellIndex() const;
 
-    int colSpan() const;
-    int rowSpan() const;
+    unsigned colSpan() const;
+    unsigned rowSpan() const;
 
     void setCellIndex(int);
 
     const AtomicString& abbr() const;
     const AtomicString& axis() const;
-    void setColSpan(int);
+    void setColSpan(unsigned);
     const AtomicString& headers() const;
-    void setRowSpan(int);
+    void setRowSpan(unsigned);
     const AtomicString& scope() const;
 
     HTMLTableCellElement* cellAbove() const;
 
 private:
     HTMLTableCellElement(const QualifiedName&, Document&);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
     virtual bool isPresentationAttribute(const QualifiedName&) const override;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
     virtual const StylePropertySet* additionalPresentationAttributeStyle() override;
 
     virtual bool isURLAttribute(const Attribute&) const override;
     virtual bool hasLegalLinkAttribute(const QualifiedName&) const override;
     virtual const QualifiedName& subResourceAttributeName() const override;
 };
 
 inline bool isHTMLTableCellElement(const HTMLElement& element)
 {
     return element.hasTagName(HTMLNames::tdTag) || element.hasTagName(HTMLNames::thTag);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLTableCellElement);
 
 } // namespace blink
 
 #endif // HTMLTableCellElement_h