diff -r 000000000000 -r 6474c204b198 toolkit/crashreporter/test/CrashTestUtils.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/crashreporter/test/CrashTestUtils.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+this.EXPORTED_SYMBOLS = ["CrashTestUtils"];
+
+this.CrashTestUtils = {
+  // These will be defined using ctypes APIs below.
+  crash: null,
+  lockDir: null,
+  dumpHasStream: null,
+  dumpHasInstructionPointerMemory: null,
+
+  // Constants for crash()
+  // Keep these in sync with nsTestCrasher.cpp!
+  CRASH_INVALID_POINTER_DEREF: 0,
+  CRASH_PURE_VIRTUAL_CALL:     1,
+  CRASH_RUNTIMEABORT:          2,
+  CRASH_OOM:                   3,
+  CRASH_MOZ_CRASH:             4,
+  CRASH_ABORT:                 5,
+
+  // Constants for dumpHasStream()
+  // From google_breakpad/common/minidump_format.h
+  MD_THREAD_LIST_STREAM:       3,
+  MD_MEMORY_INFO_LIST_STREAM:  16
+};
+
+// Grab APIs from the testcrasher shared library
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/ctypes.jsm");
+let dir = Services.dirsvc.get("CurWorkD", Components.interfaces.nsILocalFile);
+let file = dir.clone();
+file.append(ctypes.libraryName("testcrasher"));
+let lib = ctypes.open(file.path);
+CrashTestUtils.crash = lib.declare("Crash",
+                                   ctypes.default_abi,
+                                   ctypes.void_t,
+                                   ctypes.int16_t);
+CrashTestUtils.saveAppMemory = lib.declare("SaveAppMemory",
+                                           ctypes.default_abi,
+                                           ctypes.uint64_t);
+
+CrashTestUtils.lockDir = lib.declare("LockDir",
+                                     ctypes.default_abi,
+                                     ctypes.voidptr_t,   // nsILocalFile*
+                                     ctypes.voidptr_t);  // nsISupports*
+
+
+try {
+  CrashTestUtils.TryOverrideExceptionHandler = lib.declare("TryOverrideExceptionHandler",
+                                                           ctypes.default_abi,
+                                                           ctypes.void_t);
+}
+catch(ex) {}
+
+CrashTestUtils.dumpHasStream = lib.declare("DumpHasStream",
+                                           ctypes.default_abi,
+                                           ctypes.bool,
+                                           ctypes.char.ptr,
+                                           ctypes.uint32_t);
+
+CrashTestUtils.dumpHasInstructionPointerMemory =
+  lib.declare("DumpHasInstructionPointerMemory",
+              ctypes.default_abi,
+              ctypes.bool,
+              ctypes.char.ptr);
+
+CrashTestUtils.dumpCheckMemory = lib.declare("DumpCheckMemory",
+                                             ctypes.default_abi,
+                                             ctypes.bool,
+                                             ctypes.char.ptr);