Bug 1444580: Devirtualize WillDispatchMutationEvent / MutationEventDispatched. r=smaug

MozReview-Commit-ID: 4k2dEEah1FR

dom/base/nsDocument.cpp

@@ -8672,7 +8672,7 @@ nsIDocument::OnPageHide(bool aPersisted, EventTarget* aDispatchStartTarget)
 }
 
 void
-nsDocument::WillDispatchMutationEvent(nsINode* aTarget)
+nsIDocument::WillDispatchMutationEvent(nsINode* aTarget)
 {
   NS_ASSERTION(mSubtreeModifiedDepth != 0 ||
                mSubtreeModifiedTargets.Count() == 0,
@@ -8689,7 +8689,7 @@ nsDocument::WillDispatchMutationEvent(nsINode* aTarget)
 }
 
 void
-nsDocument::MutationEventDispatched(nsINode* aTarget)
+nsIDocument::MutationEventDispatched(nsINode* aTarget)
 {
   --mSubtreeModifiedDepth;
   if (mSubtreeModifiedDepth == 0) {

dom/base/nsDocument.h

@@ -205,9 +205,6 @@ public:
                                  nsAString& aEncoding,
                                  nsAString& Standalone) override;
 
-  virtual void WillDispatchMutationEvent(nsINode* aTarget) override;
-  virtual void MutationEventDispatched(nsINode* aTarget) override;
-
   // nsIRadioGroupContainer
   NS_IMETHOD WalkRadioGroup(const nsAString& aName,
                             nsIRadioVisitor* aVisitor,

dom/base/nsIDocument.h

@@ -3737,8 +3737,8 @@ protected:
    * a mutation event.
    * To make this easy and painless, use the mozAutoSubtreeModified helper class.
    */
-  virtual void WillDispatchMutationEvent(nsINode* aTarget) = 0;
-  virtual void MutationEventDispatched(nsINode* aTarget) = 0;
+  void WillDispatchMutationEvent(nsINode* aTarget);
+  void MutationEventDispatched(nsINode* aTarget);
   friend class mozAutoSubtreeModified;
 
   virtual Element* GetNameSpaceElement() override