diff --git a/dom/base/Element.cpp b/dom/base/Element.cpp
index 77f774ad12a3..9ddd4307904c 100644
--- a/dom/base/Element.cpp
+++ b/dom/base/Element.cpp
@@ -1728,7 +1728,8 @@ nsresult Element::BindToTree(BindContext& aContext, nsINode& aParent) {
     // XXXbz if we already have a style attr parsed, this won't do
     // anything... need to fix that.
     // If MayHaveStyle() is true, we must be an nsStyledElement
-    static_cast<nsStyledElement*>(this)->ReparseStyleAttribute(false, false);
+    static_cast<nsStyledElement*>(this)->ReparseStyleAttribute(
+        /* aForceInDataDoc = */ false);
   }
 
   // FIXME(emilio): Why is this needed? The element shouldn't even be styled in
diff --git a/dom/base/nsStyledElement.cpp b/dom/base/nsStyledElement.cpp
index 5cacab266ed7..e385d894622f 100644
--- a/dom/base/nsStyledElement.cpp
+++ b/dom/base/nsStyledElement.cpp
@@ -133,7 +133,7 @@ nsICSSDeclaration* nsStyledElement::Style() {
 
   if (!slots->mStyle) {
     // Just in case...
-    ReparseStyleAttribute(true, false);
+    ReparseStyleAttribute(/* aForceInDataDoc */ true);
 
     slots->mStyle = new nsDOMCSSAttributeDeclaration(this, false);
     SetMayHaveStyle();
@@ -142,14 +142,12 @@ nsICSSDeclaration* nsStyledElement::Style() {
   return slots->mStyle;
 }
 
-nsresult nsStyledElement::ReparseStyleAttribute(bool aForceInDataDoc,
-                                                bool aForceIfAlreadyParsed) {
+nsresult nsStyledElement::ReparseStyleAttribute(bool aForceInDataDoc) {
   if (!MayHaveStyle()) {
     return NS_OK;
   }
   const nsAttrValue* oldVal = mAttrs.GetAttr(nsGkAtoms::style);
-  if (oldVal && (aForceIfAlreadyParsed ||
-                 oldVal->Type() != nsAttrValue::eCSSDeclaration)) {
+  if (oldVal && oldVal->Type() != nsAttrValue::eCSSDeclaration) {
     nsAttrValue attrValue;
     nsAutoString stringValue;
     oldVal->ToString(stringValue);
@@ -165,10 +163,6 @@ nsresult nsStyledElement::ReparseStyleAttribute(bool aForceInDataDoc,
   return NS_OK;
 }
 
-void nsStyledElement::NodeInfoChanged(Document* aOldDoc) {
-  nsStyledElementBase::NodeInfoChanged(aOldDoc);
-}
-
 nsICSSDeclaration* nsStyledElement::GetExistingStyle() {
   Element::nsDOMSlots* slots = GetExistingDOMSlots();
   if (!slots) {
diff --git a/dom/base/nsStyledElement.h b/dom/base/nsStyledElement.h
index 43ebc141b5c7..5318dbd76508 100644
--- a/dom/base/nsStyledElement.h
+++ b/dom/base/nsStyledElement.h
@@ -82,13 +82,9 @@ class nsStyledElement : public nsStyledElementBase {
    * Create the style struct from the style attr.  Used when an element is
    * first put into a document.  Only has an effect if the old value is a
    * string.  If aForceInDataDoc is true, will reparse even if we're in a data
-   * document. If aForceIfAlreadyParsed is set, this will always reparse even
-   * if the value has already been parsed.
+   * document.
    */
-  nsresult ReparseStyleAttribute(bool aForceInDataDoc,
-                                 bool aForceIfAlreadyParsed);
-
-  virtual void NodeInfoChanged(mozilla::dom::Document* aOldDoc) override;
+  nsresult ReparseStyleAttribute(bool aForceInDataDoc);
 
   virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
                                  const nsAttrValueOrString* aValue,