diff -r 000000000000 -r 6474c204b198 xpcom/base/nsCrashOnException.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/base/nsCrashOnException.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,21 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#ifndef nsCrashOnException_h
+#define nsCrashOnException_h
+
+#include <nscore.h>
+#include <windows.h>
+
+namespace mozilla {
+
+// Call a given window procedure, and catch any Win32 exceptions raised from it,
+// and report them as crashes.
+XPCOM_API(LRESULT) CallWindowProcCrashProtected(WNDPROC wndProc, HWND hWnd, UINT msg,
+                                               WPARAM wParam, LPARAM lParam);
+
+}
+
+#endif