Bug 1444580: Devirtualize subdocument stuff. r=smaug

MozReview-Commit-ID: Hbh3j85JPKm

dom/base/nsDocument.cpp

@@ -8053,7 +8053,7 @@ nsDocument::Sanitize()
 }
 
 void
-nsDocument::EnumerateSubDocuments(nsSubDocEnumFunc aCallback, void *aData)
+nsIDocument::EnumerateSubDocuments(nsSubDocEnumFunc aCallback, void *aData)
 {
   if (!mSubDocuments) {
     return;
@@ -8077,7 +8077,7 @@ nsDocument::EnumerateSubDocuments(nsSubDocEnumFunc aCallback, void *aData)
 }
 
 void
-nsDocument::CollectDescendantDocuments(
+nsIDocument::CollectDescendantDocuments(
   nsTArray<nsCOMPtr<nsIDocument>>& aDescendants,
   nsDocTestFunc aCallback) const
 {

dom/base/nsDocument.h

@@ -509,12 +509,6 @@ public:
 
   virtual void Sanitize() override;
 
-  virtual void EnumerateSubDocuments(nsSubDocEnumFunc aCallback,
-                                                 void *aData) override;
-  virtual void CollectDescendantDocuments(
-    nsTArray<nsCOMPtr<nsIDocument>>& aDescendants,
-    nsDocTestFunc aCallback) const override;
-
   virtual bool CanSavePresentation(nsIRequest *aNewRequest) override;
   virtual void Destroy() override;
   virtual void RemovedFromDocShell() override;

dom/base/nsIDocument.h

@@ -2020,17 +2020,16 @@ public:
    * false to stop.  This will never get passed a null aDocument.
    */
   typedef bool (*nsSubDocEnumFunc)(nsIDocument *aDocument, void *aData);
-  virtual void EnumerateSubDocuments(nsSubDocEnumFunc aCallback,
-                                     void *aData) = 0;
+  void EnumerateSubDocuments(nsSubDocEnumFunc aCallback, void *aData);
 
   /**
    * Collect all the descendant documents for which |aCalback| returns true.
    * The callback function must not mutate any state for the given document.
    */
   typedef bool (*nsDocTestFunc)(const nsIDocument* aDocument);
-  virtual void CollectDescendantDocuments(
+  void CollectDescendantDocuments(
     nsTArray<nsCOMPtr<nsIDocument>>& aDescendants,
-    nsDocTestFunc aCallback) const = 0;
+    nsDocTestFunc aCallback) const;
 
   /**
    * Check whether it is safe to cache the presentation of this document