diff --git a/mozilla/editor/idl/nsIContentFilter.idl b/mozilla/editor/idl/nsIContentFilter.idl
index 2b28fc456af..de1a8e276fb 100644
--- a/mozilla/editor/idl/nsIContentFilter.idl
+++ b/mozilla/editor/idl/nsIContentFilter.idl
@@ -91,6 +91,7 @@ interface nsIContentFilter : nsISupports
    *
    * @param mimeType          the mimetype used for retrieving data
    * @param contentSourceURL  location where docFragment came from
+   * @param sourceDocument      document where content came from (can be null)
    * @param willDeleteSelection tells hook if selection will/should be deleted
    * @param docFragment         fragment of node to be inserted
    * @param contentStartNode    node under which content to be inserted begins
@@ -104,6 +105,7 @@ interface nsIContentFilter : nsISupports
 
   void notifyOfInsertion(in AString mimeType,
                          in nsIURL contentSourceURL,
+                         in nsIDOMDocument sourceDocument,
                          in PRBool willDeleteSelection,
                          inout nsIDOMNode docFragment,
                          inout nsIDOMNode contentStartNode,
diff --git a/mozilla/editor/idl/nsIHTMLEditor.idl b/mozilla/editor/idl/nsIHTMLEditor.idl
index 10ed62e4ccc..e96da3aa54e 100644
--- a/mozilla/editor/idl/nsIHTMLEditor.idl
+++ b/mozilla/editor/idl/nsIHTMLEditor.idl
@@ -258,6 +258,7 @@ interface nsIHTMLEditor : nsISupports
    * @param aContextStr    Context of insertion
    * @param aInfoStr       Related info to aInputString 
    * @param aFlavor        Transferable flavor, can be ""
+   * @param aSourceDoc          document where input was dragged from (may be null)
    * @param aDestinationNode    location for insertion (such as when dropped)
    * @param aDestinationOffset  used with aDestNode to determine insert location
    * @param aDeleteSelection    used with aDestNode during drag&drop 
@@ -268,6 +269,7 @@ interface nsIHTMLEditor : nsISupports
                                        in AString aContextStr,
                                        in AString aInfoStr,
                                        in AString aFlavor,
+                                       in nsIDOMDocument aSourceDoc,
                                        in nsIDOMNode aDestinationNode,
                                        in long aDestinationOffset,
                                        in boolean aDeleteSelection);
diff --git a/mozilla/editor/libeditor/html/nsHTMLEditor.h b/mozilla/editor/libeditor/html/nsHTMLEditor.h
index cceebeb21b9..c5927e28938 100644
--- a/mozilla/editor/libeditor/html/nsHTMLEditor.h
+++ b/mozilla/editor/libeditor/html/nsHTMLEditor.h
@@ -194,6 +194,7 @@ public:
                                              const nsAString & aContextStr,
                                              const nsAString & aInfoStr,
                                              const nsAString & aFlavor,
+                                             nsIDOMDocument *aSourceDoc,
                                              nsIDOMNode *aDestinationNode,
                                              PRInt32 aDestinationOffset,
                                              PRBool aDeleteSelection);
@@ -685,6 +686,7 @@ protected:
   NS_IMETHOD PrepareHTMLTransferable(nsITransferable **transferable, PRBool havePrivFlavor);
   nsresult   PutDragDataInTransferable(nsITransferable **aTransferable);
   NS_IMETHOD InsertFromTransferable(nsITransferable *transferable, 
+                                    nsIDOMDocument *aSourceDoc,
                                     const nsAString & aContextStr,
                                     const nsAString & aInfoStr,
                                     nsIDOMNode *aDestinationNode,
@@ -693,6 +695,7 @@ protected:
   PRBool HavePrivateHTMLFlavor( nsIClipboard *clipboard );
   nsresult   ParseCFHTML(nsCString & aCfhtml, PRUnichar **aStuffToPaste, PRUnichar **aCfcontext);
   nsresult   DoContentFilterCallback(const nsAString &aFlavor,
+                                     nsIDOMDocument *aSourceDoc,
                                      PRBool aWillDeleteSelection,
                                      nsIDOMNode **aFragmentAsNode,      
                                      nsIDOMNode **aFragStartNode,