Adding method to create process using LowBox token in sandbox code.

sandbox/win/src/sync_policy_test.cc

 // Copyright (c) 2011 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 "sandbox/win/src/sync_policy_test.h"
 
 #include "base/win/scoped_handle.h"
 #include "sandbox/win/src/sandbox.h"
 #include "sandbox/win/src/sandbox_policy.h"
 #include "sandbox/win/src/sandbox_factory.h"
@@ skipping 11 matching lines @@
     desired_access = EVENT_ALL_ACCESS;
 
   base::win::ScopedHandle event_open(::OpenEvent(
       desired_access, FALSE, argv[1]));
   DWORD error_open = ::GetLastError();
 
   if (event_open.IsValid())
     return SBOX_TEST_SUCCEEDED;
 
   if (ERROR_ACCESS_DENIED == error_open ||
-      ERROR_BAD_PATHNAME == error_open)
+      ERROR_BAD_PATHNAME == error_open ||
+      ERROR_FILE_NOT_FOUND == error_open)
     return SBOX_TEST_DENIED;
 
   return SBOX_TEST_FAILED;
 }
 
 SBOX_TESTS_COMMAND int Event_CreateOpen(int argc, wchar_t **argv) {
   if (argc < 2 || argc > 3)
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
 
   wchar_t *event_name = NULL;
@@ skipping 95 matching lines @@
   EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"Event_Open s test2"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Event_Open f test3"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Event_Open s test4"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Event_CreateOpen f f test5"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Event_CreateOpen t f test6"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Event_CreateOpen f t test5"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Event_CreateOpen t t test6"));
 }
 
 }  // namespace sandbox