Bug 42518. Remove bogus re-implementation of GetCurrentSession(). r=pink

widget/src/windows/nsDragService.cpp

@@ -267,16 +267,6 @@ NS_IMETHODIMP nsDragService::IsDataFlavorSupported(const char *aDataFlavor, PRBo
 }
 
 //-------------------------------------------------------------------------
-NS_IMETHODIMP nsDragService::GetCurrentSession (nsIDragSession ** aSession)
-{
-  if ( !aSession )
-    return NS_ERROR_FAILURE;
-
-  *aSession = (nsIDragSession *)this;
-  NS_ADDREF(*aSession);
-  return NS_OK;
-}
-
 
 //
 // IsCollectionObject
@@ -304,4 +294,4 @@ nsDragService :: IsCollectionObject ( IDataObject* inDataObj )
 
   return isCollection;
 
-} // IsCollectionObject
+} // IsCollectionObject

widget/src/windows/nsDragService.h

@@ -42,7 +42,6 @@ public:
   
   // nsIDragService
   NS_IMETHOD InvokeDragSession (nsIDOMNode *aDOMNode, nsISupportsArray * anArrayTransferables, nsIScriptableRegion * aRegion, PRUint32 aActionType);
-  NS_IMETHOD GetCurrentSession (nsIDragSession ** aSession);
 
   // nsIDragSession
   NS_IMETHOD GetData (nsITransferable * aTransferable, PRUint32 anItem);