Added IID() methods.

editor/txmgr/public/nsITransaction.h

@@ -42,6 +42,8 @@ Transaction interface to outside world
 class nsITransaction  : public nsISupports{
 public:
 
+  static const nsIID& IID() { static nsIID iid = NS_ITRANSACTION_IID; return iid; }
+
   /**
    * Executes the transaction.
    */

editor/txmgr/public/nsITransactionListener.h

@@ -42,6 +42,8 @@ Transaction Listener interface to outside world
 class nsITransactionListener : public nsISupports {
 public:
 
+  static const nsIID& IID() { static nsIID iid = NS_ITRANSACTIONLISTENER_IID; return iid; }
+
   /**
    * Called when a transaction manager is doing a transaction.
    * @param aContinue if true, transaction manager continues normal processing.

editor/txmgr/public/nsITransactionManager.h

@@ -42,6 +42,8 @@ Transaction Manager interface to outside world
 class nsITransactionManager  : public nsISupports{
 public:
 
+  static const nsIID& IID() { static nsIID iid = NS_ITRANSACTIONMANAGER_IID; return iid; }
+
   /**
    * Calls a transaction's Do() method, then pushes it on the undo stack.
    * <P>