Sync the HTMLTableElement return types with the spec

third_party/WebKit/Source/core/html/HTMLTableElement.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, 2008 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 33 matching lines @@
 
     HTMLTableCaptionElement* caption() const;
     void setCaption(PassRefPtrWillBeRawPtr<HTMLTableCaptionElement>, ExceptionState&);
 
     HTMLTableSectionElement* tHead() const;
     void setTHead(PassRefPtrWillBeRawPtr<HTMLTableSectionElement>, ExceptionState&);
 
     HTMLTableSectionElement* tFoot() const;
     void setTFoot(PassRefPtrWillBeRawPtr<HTMLTableSectionElement>, ExceptionState&);
 
-    PassRefPtrWillBeRawPtr<HTMLElement> createTHead();
+    PassRefPtrWillBeRawPtr<HTMLTableSectionElement> createTHead();
     void deleteTHead();
-    PassRefPtrWillBeRawPtr<HTMLElement> createTFoot();
+    PassRefPtrWillBeRawPtr<HTMLTableSectionElement> createTFoot();
     void deleteTFoot();
-    PassRefPtrWillBeRawPtr<HTMLElement> createTBody();
-    PassRefPtrWillBeRawPtr<HTMLElement> createCaption();
+    PassRefPtrWillBeRawPtr<HTMLTableSectionElement> createTBody();
+    PassRefPtrWillBeRawPtr<HTMLTableCaptionElement> createCaption();
     void deleteCaption();
-    PassRefPtrWillBeRawPtr<HTMLElement> insertRow(int index, ExceptionState&);
+    PassRefPtrWillBeRawPtr<HTMLTableRowElement> insertRow(int index, ExceptionState&);
     void deleteRow(int index, ExceptionState&);
 
     PassRefPtrWillBeRawPtr<HTMLTableRowsCollection> rows();
     PassRefPtrWillBeRawPtr<HTMLCollection> tBodies();
 
     const AtomicString& rules() const;
     const AtomicString& summary() const;
 
     const StylePropertySet* additionalCellStyle();
     const StylePropertySet* additionalGroupStyle(bool rows);
@@ skipping 31 matching lines @@
     TableRules m_rulesAttr;     // Implies a thin border width, a collapsing border model, and all borders on the table becoming set to hidden (if frame/border
                                 // are present, to none otherwise).
 
     unsigned short m_padding;
     RefPtrWillBeMember<StylePropertySet> m_sharedCellStyle;
 };
 
 } // namespace blink
 
 #endif // HTMLTableElement_h