Bug 1444580: Devirtualize NotifyLayerManagerRecreated. r=smaug

MozReview-Commit-ID: 9KQ5mzD11Dr

dom/base/nsDocument.cpp

@@ -12399,7 +12399,7 @@ NotifyLayerManagerRecreatedCallback(nsIDocument* aDocument, void* aData)
 }
 
 void
-nsDocument::NotifyLayerManagerRecreated()
+nsIDocument::NotifyLayerManagerRecreated()
 {
   EnumerateActivityObservers(NotifyActivityChanged, nullptr);
   EnumerateSubDocuments(NotifyLayerManagerRecreatedCallback, nullptr);

dom/base/nsDocument.h

@@ -468,8 +468,6 @@ public:
 
   void ReportUseCounters(UseCounterReportKind aKind = UseCounterReportKind::eDefault);
 
-  virtual void NotifyLayerManagerRecreated() override;
-
   bool IsSynthesized();
 
   // Check whether shadow DOM is enabled for the global of aObject.

dom/base/nsIDocument.h

@@ -1151,7 +1151,7 @@ public:
     return mPageUnloadingEventTimeStamp;
   }
 
-  virtual void NotifyLayerManagerRecreated() = 0;
+  void NotifyLayerManagerRecreated();
 
   /**
    * Add an SVG element to the list of elements that need