Add GetIID() methods.

dom/public/coreEvents/nsIDOMCompositionListener.h

@@ -35,8 +35,10 @@ class nsIDOMCompositionListener : public nsIDOMEventListener {
 
 public:
 
-    virtual nsresult HandleStartComposition(nsIDOMEvent* aCompositionEvent) = 0;
-	virtual nsresult HandleEndComposition(nsIDOMEvent* aCompositionEvent) = 0;
+  static const nsIID& GetIID() { static nsIID iid = NS_IDOMCOMPOSITIONLISTENER_IID; return iid; }
+
+  virtual nsresult HandleStartComposition(nsIDOMEvent* aCompositionEvent) = 0;
+  virtual nsresult HandleEndComposition(nsIDOMEvent* aCompositionEvent) = 0;
 
 };
 #endif // nsIDOMCompositionListener_h__

dom/public/coreEvents/nsIDOMDragListener.h

@@ -36,6 +36,8 @@ class nsIDOMDragListener : public nsIDOMEventListener {
 
 public:
 
+  static const nsIID& GetIID() { static nsIID iid = NS_IDOMDRAGLISTENER_IID; return iid; }
+
   /**
   * Processes a drag enter event
   * @param aMouseEvent @see nsIDOMEvent.h 

dom/public/coreEvents/nsIDOMTextListener.h

@@ -34,6 +34,8 @@ class nsIDOMTextListener : public nsIDOMEventListener {
 
 public:
 
+    static const nsIID& GetIID() { static nsIID iid = NS_IDOMTEXTLISTENER_IID; return iid; }
+
     virtual nsresult HandleText(nsIDOMEvent* aTextEvent) = 0;
 
 };