Wrap Sparkle's minimum interface with C++.

browser/auto_updater_delegate.h

@@ -0,0 +1,25 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_AUTO_UPDATER_DELEGATE_H_
+#define ATOM_BROWSER_AUTO_UPDATER_DELEGATE_H_
+
+#include <string>
+
+#include "base/callback_forward.h"
+
+namespace auto_updater {
+
+class AutoUpdaterDelegate {
+ public:
+  virtual void WillInstallUpdate(const std::string& version,
+                                 const base::Closure& install);
+
+ protected:
+  virtual ~AutoUpdaterDelegate() {}
+};
+
+}  // namespace auto_updater
+
+#endif  // ATOM_BROWSER_AUTO_UPDATER_DELEGATE_H_