Bug 1335997 - Part 2. Don't use virtual method for NotifyDocumentListeners and ScrollSelectionIntoView. r=masayuki

Both methods don't override by TextEditor and HTMLEditor.  It is unnecessary to use as virtual method.

MozReview-Commit-ID: 6FNO78RauML

--HG--
extra : rebase_source : fb74a9b83a889ab2be04529527704f6de4b666dd

editor/libeditor/EditorBase.cpp

@@ -2295,7 +2295,7 @@ EditorBase::CloneAttributes(Element* aDest,
   }
 }
 
-NS_IMETHODIMP
+nsresult
 EditorBase::ScrollSelectionIntoView(bool aScrollToAnchor)
 {
   nsCOMPtr<nsISelectionController> selCon;
@@ -2577,7 +2577,7 @@ EditorBase::GetFirstEditableNode(nsINode* aRoot)
   return (node != aRoot) ? node : nullptr;
 }
 
-NS_IMETHODIMP
+nsresult
 EditorBase::NotifyDocumentListeners(
               TDocumentListenerNotification aNotificationType)
 {

editor/libeditor/EditorBase.h

@@ -402,8 +402,8 @@ protected:
   /**
    * Tell the doc state listeners that the doc state has changed.
    */
-  NS_IMETHOD NotifyDocumentListeners(
-               TDocumentListenerNotification aNotificationType);
+  nsresult NotifyDocumentListeners(
+             TDocumentListenerNotification aNotificationType);
 
   /**
    * Make the given selection span the entire document.
@@ -421,7 +421,7 @@ protected:
    * that the editor's sync/async settings for reflowing, painting, and
    * scrolling match.
    */
-  NS_IMETHOD ScrollSelectionIntoView(bool aScrollToAnchor);
+  nsresult ScrollSelectionIntoView(bool aScrollToAnchor);
 
   virtual bool IsBlockNode(nsINode* aNode);