diff --git a/mozilla/webshell/tests/viewer/nsSetupRegistry.cpp b/mozilla/webshell/tests/viewer/nsSetupRegistry.cpp
index da2b9b2fb9d..a2fafb658b8 100644
--- a/mozilla/webshell/tests/viewer/nsSetupRegistry.cpp
+++ b/mozilla/webshell/tests/viewer/nsSetupRegistry.cpp
@@ -141,6 +141,7 @@ static NS_DEFINE_IID(kCTextAreaCID, NS_TEXTAREA_CID);
 static NS_DEFINE_IID(kCTextFieldCID, NS_TEXTFIELD_CID);
 static NS_DEFINE_IID(kCCheckButtonCID, NS_CHECKBUTTON_CID);
 static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
+static NS_DEFINE_IID(kCPopUpCID,NS_POPUP_CID);
 static NS_DEFINE_IID(kCAppShellCID, NS_APPSHELL_CID);
 static NS_DEFINE_IID(kCToolkitCID, NS_TOOLKIT_CID);
 static NS_DEFINE_IID(kClipboardCID,            NS_CLIPBOARD_CID);
@@ -342,6 +343,7 @@ NS_SetupRegistry()
   nsComponentManager::RegisterComponentLib(kCTextFieldCID, NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);
   nsComponentManager::RegisterComponentLib(kCCheckButtonCID, NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);
   nsComponentManager::RegisterComponentLib(kCChildCID, NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);
+  nsComponentManager::RegisterComponentLib(kCPopUpCID,NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);
   nsComponentManager::RegisterComponentLib(kCAppShellCID, NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);
   nsComponentManager::RegisterComponentLib(kCToolkitCID, NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);
   nsComponentManager::RegisterComponentLib(kClipboardCID,            NULL, NULL, WIDGET_DLL, PR_FALSE, PR_FALSE);