Implement install module verification metric.

chrome/browser/install_module_verifier_win.h

Index: chrome/browser/install_module_verifier_win.h
diff --git a/chrome/browser/install_module_verifier_win.h b/chrome/browser/install_module_verifier_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..1ba4235125c36ef1531d17943835b79588c28382
--- /dev/null
+++ b/chrome/browser/install_module_verifier_win.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2013 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 CHROME_BROWSER_INSTALL_MODULE_VERIFIER_WIN_H_
+#define CHROME_BROWSER_INSTALL_MODULE_VERIFIER_WIN_H_
+
+#include "base/callback_forward.h"
+
+namespace base {
+class ListValue;
+}  // namespace base
+
+void InitiateInstalledModuleVerification();
+void VerifyInstalledModules(base::ListValue* module_list,
+                            const base::Callback<void(size_t)>& delegate);
+
+#endif  // CHROME_BROWSER_INSTALL_MODULE_VERIFIER_WIN_H_