diff -r 000000000000 -r 6474c204b198 security/manager/pki/src/nsFormSigningDialog.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/manager/pki/src/nsFormSigningDialog.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,91 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsFormSigningDialog.h"
+#include "nsNSSDialogHelper.h"
+#include "nsCOMPtr.h"
+#include "nsIDialogParamBlock.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsLiteralString.h"
+#include "nsXPIDLString.h"
+
+nsFormSigningDialog::nsFormSigningDialog()
+{
+}
+
+nsFormSigningDialog::~nsFormSigningDialog()
+{
+}
+
+NS_IMPL_ISUPPORTS(nsFormSigningDialog, nsIFormSigningDialog)
+
+NS_IMETHODIMP
+nsFormSigningDialog::ConfirmSignText(nsIInterfaceRequestor *aContext, 
+                                     const nsAString &aHost,
+                                     const nsAString &aSignText,
+                                     const char16_t **aCertNickList,
+                                     const char16_t **aCertDetailsList,
+                                     uint32_t aCount, int32_t *aSelectedIndex,
+                                     nsAString &aPassword, bool *aCanceled) 
+{
+  *aCanceled = true;
+
+  // Get the parent window for the dialog
+  nsCOMPtr<nsIDOMWindow> parent = do_GetInterface(aContext);
+
+  nsresult rv;
+  nsCOMPtr<nsIDialogParamBlock> block =
+    do_CreateInstance(NS_DIALOGPARAMBLOCK_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  block->SetNumberStrings(3 + aCount * 2);
+
+  rv = block->SetString(0, PromiseFlatString(aHost).get());
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = block->SetString(1, PromiseFlatString(aSignText).get());
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t i;
+  for (i = 0; i < aCount; ++i) {
+    rv = block->SetString(2 + 2 * i, aCertNickList[i]);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = block->SetString(2 + (2 * i + 1), aCertDetailsList[i]);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  rv = block->SetInt(0, aCount);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = nsNSSDialogHelper::openDialog(parent,
+                                     "chrome://pippki/content/formsigning.xul",
+                                     block);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  int32_t status;
+  rv = block->GetInt(0, &status);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (status == 0) {
+    *aCanceled = true;
+  }
+  else {
+    *aCanceled = false;
+
+    rv = block->GetInt(1, aSelectedIndex);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsXPIDLString pw;
+    rv = block->GetString(0, getter_Copies(pw));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    aPassword = pw;
+  }
+
+  return NS_OK;
+}