Bug 1447358: Unifdef the old style system code. r=jwatt

Summary:
This has been automatically generated using:

  http://dotat.at/prog/unifdef/

And:

find $OBJDIR -type f -name '*.h' |
while read FILE; do
  echo "$FILE"
  unifdef -m -DMOZ_STYLO -UMOZ_OLD_STYLE "$FILE";
done

find $OBJDIR -type f -name '*.cpp' |
while read FILE; do
  echo "$FILE"
  unifdef -m -DMOZ_STYLO -UMOZ_OLD_STYLE "$FILE";
done

MozReview-Commit-ID: I4NdKqbMXzJ

Reviewers: jwatt

Bug #: 1447358

Differential Revision: https://phabricator.services.mozilla.com/D779

dom/html/HTMLTableCellElement.cpp

@@ -10,9 +10,6 @@
 #include "mozilla/GenericSpecifiedValuesInlines.h"
 #include "nsMappedAttributes.h"
 #include "nsAttrValueInlines.h"
-#ifdef MOZ_OLD_STYLE
-#include "nsRuleWalker.h"
-#endif
 #include "celldata.h"
 #include "mozilla/dom/HTMLTableCellElementBinding.h"
 
@@ -93,21 +90,6 @@ HTMLTableCellElement::CellIndex() const
   return -1;
 }
 
-#ifdef MOZ_OLD_STYLE
-NS_IMETHODIMP
-HTMLTableCellElement::WalkContentStyleRules(nsRuleWalker* aRuleWalker)
-{
-  nsresult rv = nsGenericHTMLElement::WalkContentStyleRules(aRuleWalker);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (nsMappedAttributes* tableInheritedAttributes = GetMappedAttributesInheritedFromTable()) {
-    if (tableInheritedAttributes) {
-      aRuleWalker->Forward(tableInheritedAttributes);
-    }
-  }
-  return NS_OK;
-}
-#endif
 
 nsMappedAttributes*
 HTMLTableCellElement::GetMappedAttributesInheritedFromTable() const