diff -r 000000000000 -r 6474c204b198 toolkit/mozapps/update/common/updatehelper.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/mozapps/update/common/updatehelper.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,39 @@
+/* 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/. */
+
+BOOL LaunchWinPostProcess(const WCHAR *installationDir,
+                          const WCHAR *updateInfoDir,
+                          bool forceSync,
+                          HANDLE userToken);
+BOOL StartServiceUpdate(LPCWSTR installDir);
+BOOL GetUpdateDirectoryPath(LPWSTR path);
+DWORD LaunchServiceSoftwareUpdateCommand(int argc, LPCWSTR *argv);
+BOOL WriteStatusFailure(LPCWSTR updateDirPath, int errorCode);
+BOOL WriteStatusPending(LPCWSTR updateDirPath);
+DWORD WaitForServiceStop(LPCWSTR serviceName, DWORD maxWaitSeconds);
+DWORD WaitForProcessExit(LPCWSTR filename, DWORD maxSeconds);
+BOOL DoesFallbackKeyExist();
+BOOL IsLocalFile(LPCWSTR file, BOOL &isLocal);
+DWORD StartServiceCommand(int argc, LPCWSTR* argv);
+BOOL IsUnpromptedElevation(BOOL &isUnpromptedElevation);
+
+#define SVC_NAME L"MozillaMaintenance"
+
+#define BASE_SERVICE_REG_KEY \
+  L"SOFTWARE\\Mozilla\\MaintenanceService"
+
+// The test only fallback key, as its name implies, is only present on machines
+// that will use automated tests.  Since automated tests always run from a
+// different directory for each test, the presence of this key bypasses the
+// "This is a valid installation directory" check.  This key also stores
+// the allowed name and issuer for cert checks so that the cert check
+// code can still be run unchanged.
+#define TEST_ONLY_FALLBACK_KEY_PATH \
+  BASE_SERVICE_REG_KEY L"\\3932ecacee736d366d6436db0f55bce4"
+
+#ifdef MOZ_METRO
+  bool GetDefaultBrowserAppModelID(WCHAR* aIDBuffer, long aCharLength);
+  HRESULT LaunchDefaultMetroBrowser();
+#endif
+