[Windows Sandbox Tests] Process Mitigations.

sandbox/win/tests/integration_tests/hooking_dll.h

Index: sandbox/win/tests/integration_tests/hooking_dll.h
diff --git a/sandbox/win/tests/integration_tests/hooking_dll.h b/sandbox/win/tests/integration_tests/hooking_dll.h
new file mode 100644
index 0000000000000000000000000000000000000000..a52b7b472034d92638afef86a1fe62ef1a49c51f
--- /dev/null
+++ b/sandbox/win/tests/integration_tests/hooking_dll.h
@@ -0,0 +1,27 @@
+// Copyright 2016 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.
+
+#ifndef SANDBOX_TESTS_INTEGRATION_TESTS_HOOKING_DLL_H_
+#define SANDBOX_TESTS_INTEGRATION_TESTS_HOOKING_DLL_H_
+
+#include <windows.h>
+
+#ifdef BUILDING_DLL
+#define DLL_EXPORT __declspec(dllexport)
+#else
+#define DLL_EXPORT __declspec(dllimport)
+#endif
+
+namespace hooking_dll {
+
+constexpr wchar_t g_hook_dll_file[] = L"sbox_integration_test_hook_dll.dll";
+constexpr wchar_t g_hook_event[] = L"ChromeExtensionTestHookEvent";
+
+DLL_EXPORT void SetHook(HHOOK hook_handle);
+DLL_EXPORT bool WasHookCalled();
+DLL_EXPORT LRESULT HookProc(int code, WPARAM w_param, LPARAM l_param);
+
+}  // namespace hooking_dll
+
+#endif  // SANDBOX_TESTS_INTEGRATION_TESTS_HOOKING_DLL_H_