--- a/content/html/content/src/nsTextEditorState.cpp
+++ b/content/html/content/src/nsTextEditorState.cpp
@@ -892,20 +892,18 @@ nsTextInputListener::EditAction()
   // no undo items; JS could change the value and we'd still need to save it)
   frame->SetValueChanged(PR_TRUE);
 
   if (!mSettingValue) {
     mTxtCtrlElement->OnValueChanged(PR_TRUE);
   }
 
   // Fire input event
-  nsCOMPtr<nsIEditor_MOZILLA_2_0_BRANCH> editor20 = do_QueryInterface(editor);
-  NS_ASSERTION(editor20, "Something is very wrong!");
   PRBool trusted = PR_FALSE;
-  editor20->GetLastKeypressEventTrusted(&trusted);
+  editor->GetLastKeypressEventTrusted(&trusted);
   frame->FireOnInput(trusted);
 
   // mFrame may be dead after this, but we don't need to check for it, because
   // we are not uisng it in this function any more.
 
   return NS_OK;
 }
 

--- a/editor/idl/nsIEditor.idl
+++ b/editor/idl/nsIEditor.idl
@@ -50,17 +50,17 @@ interface nsIDocumentStateListener;
 interface nsIOutputStream;
 interface nsITransactionManager;
 interface nsITransaction;
 interface nsIEditorObserver;
 interface nsIEditActionListener;
 interface nsIInlineSpellChecker;
 interface nsITransferable;
 
-[scriptable, uuid(78b0bde0-ab69-428b-ab30-fcc09eead499)]
+[scriptable, uuid(bd5d93f0-6451-11e0-ae3e-0800200c9a66)]
 
 interface nsIEditor  : nsISupports
 {
 %{C++
   typedef short EDirection;
 %}
   const short eNone = 0;
   const short eNext = 1;
@@ -567,20 +567,16 @@ interface nsIEditor  : nsISupports
   /** Dumps a text representation of the content tree to standard out */
   void debugDumpContent() ;
 
   /* Run unit tests. Noop in optimized builds */
   void debugUnitTests(out long outNumTests, out long  outNumTestsFailed);
 
   /* checks if a node is read-only or not */
   [notxpcom] boolean isModifiableNode(in nsIDOMNode aNode);
-};
 
-[uuid(54c0bc08-6c0e-4967-bb0d-ec991d78a8b3)]
-interface nsIEditor_MOZILLA_2_0_BRANCH : nsISupports
-{
   /**
    * Will be set to true if the last keypress event that the editor has handled
    * has been trusted.  The value will only be valid when the edit action listeners
    * are being called, and will throw upon access at all other times.
    */
   readonly attribute boolean lastKeypressEventTrusted;
 };

--- a/editor/libeditor/base/nsEditor.cpp
+++ b/editor/libeditor/base/nsEditor.cpp
@@ -200,17 +200,16 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mActionListeners)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mEditorObservers)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMARRAY(mDocStateListeners)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mEventTarget)
  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mEventListener)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsEditor)
- NS_INTERFACE_MAP_ENTRY(nsIEditor_MOZILLA_2_0_BRANCH)
  NS_INTERFACE_MAP_ENTRY(nsIPhonetic)
  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
  NS_INTERFACE_MAP_ENTRY(nsIEditorIMESupport)
  NS_INTERFACE_MAP_ENTRY(nsIEditor)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIEditor)
 NS_INTERFACE_MAP_END
 
 NS_IMPL_CYCLE_COLLECTING_ADDREF(nsEditor)

--- a/editor/libeditor/base/nsEditor.h
+++ b/editor/libeditor/base/nsEditor.h
@@ -95,18 +95,17 @@ class nsIDOMNSEvent;
 /** implementation of an editor object.  it will be the controller/focal point 
  *  for the main editor services. i.e. the GUIManager, publishing, transaction 
  *  manager, event interfaces. the idea for the event interfaces is to have them 
  *  delegate the actual commands to the editor independent of the XPFE implementation.
  */
 class nsEditor : public nsIEditor,
                  public nsIEditorIMESupport,
                  public nsSupportsWeakReference,
-                 public nsIPhonetic,
-                 public nsIEditor_MOZILLA_2_0_BRANCH
+                 public nsIPhonetic
 {
 public:
 
   enum IterDirection
   {
     kIterForward,
     kIterBackward
   };
@@ -152,19 +151,16 @@ public:
   /* ------------ nsIEditor methods -------------- */
   NS_DECL_NSIEDITOR
   /* ------------ nsIEditorIMESupport methods -------------- */
   NS_DECL_NSIEDITORIMESUPPORT
   
   // nsIPhonetic
   NS_DECL_NSIPHONETIC
 
-  // nsIEditor_MOZILLA_2_0_BRANCH
-  NS_DECL_NSIEDITOR_MOZILLA_2_0_BRANCH
-
 public:
 
   
   NS_IMETHOD InsertTextImpl(const nsAString& aStringToInsert, 
                                nsCOMPtr<nsIDOMNode> *aInOutNode, 
                                PRInt32 *aInOutOffset,
                                nsIDOMDocument *aDoc);
   nsresult InsertTextIntoTextNodeImpl(const nsAString& aStringToInsert,