diff -r 000000000000 -r 6474c204b198 security/sandbox/win/src/ipc_ping_test.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/sandbox/win/src/ipc_ping_test.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,58 @@
+// Copyright (c) 2006-2008 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 "testing/gtest/include/gtest/gtest.h"
+#include "sandbox/win/src/sandbox.h"
+#include "sandbox/win/src/sandbox_factory.h"
+#include "sandbox/win/src/target_services.h"
+#include "sandbox/win/tests/common/controller.h"
+
+namespace sandbox {
+
+// Tests that the IPC is working by issuing a special IPC that is not exposed
+// in the public API.
+SBOX_TESTS_COMMAND int IPC_Ping(int argc, wchar_t **argv) {
+  if (argc != 1)
+    return SBOX_TEST_FAILED;
+
+  TargetServices* ts = SandboxFactory::GetTargetServices();
+  if (NULL == ts)
+    return SBOX_TEST_FAILED;
+
+  // Downcast because we have internal knowledge of the object returned.
+  TargetServicesBase* ts_base = reinterpret_cast<TargetServicesBase*>(ts);
+
+  int version = 0;
+  if (L'1' == argv[0][0])
+    version = 1;
+  else
+    version = 2;
+
+  if (!ts_base->TestIPCPing(version))
+    return SBOX_TEST_FAILED;
+
+  ::Sleep(1);
+  if (!ts_base->TestIPCPing(version))
+    return SBOX_TEST_FAILED;
+
+  return SBOX_TEST_SUCCEEDED;
+}
+
+// The IPC ping test should work before and after the token drop.
+TEST(IPCTest, IPCPingTestSimple) {
+  TestRunner runner;
+  runner.SetTimeout(2000);
+  runner.SetTestState(EVERY_STATE);
+  EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"IPC_Ping 1"));
+}
+
+TEST(IPCTest, IPCPingTestWithOutput) {
+  TestRunner runner;
+  runner.SetTimeout(2000);
+  runner.SetTestState(EVERY_STATE);
+  EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"IPC_Ping 2"));
+  EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"IPC_Ping 2"));
+}
+
+}  // namespace sandbox