First cut at Firefox import on OSX + stubs for Safari import.

chrome/browser/importer/nss_decryptor_mac.mm

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <Cocoa/Cocoa.h>
+
+#include "chrome/browser/importer/nss_decryptor_mac.h"
+
+#include "base/logging.h"
+
+// static
+const wchar_t NSSDecryptor::kNSS3Library[] = L"libnss3.dylib";
+const wchar_t NSSDecryptor::kSoftokn3Library[] = L"libsoftokn3.dylib";
+const wchar_t NSSDecryptor::kPLDS4Library[] = L"libplds4.dylib";
+const wchar_t NSSDecryptor::kNSPR4Library[] = L"libnspr4.dylib";
+
+bool NSSDecryptor::Init(const std::wstring& dll_path,
+                        const std::wstring& db_path) {
+  // TODO(port): Load the NSS libraries and call InitNSS()
+  // http://code.google.com/p/chromium/issues/detail?id=15455
+  NOTIMPLEMENTED();
+  return false;
+}