Minor cleanup of view manager

mojo/services/view_manager/connection_manager_delegate.h

+// Copyright 2014 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 MOJO_SERVICES_VIEW_MANAGER_CONNECTION_MANAGER_DELEGATE_H_
+#define MOJO_SERVICES_VIEW_MANAGER_CONNECTION_MANAGER_DELEGATE_H_
+
+namespace mojo {
+namespace service {
+
+class ConnectionManagerDelegate {
+ public:
+  virtual void OnNativeViewportDestroyed() = 0;
+  virtual void OnLostConnectionToWindowManager() = 0;
+
+ protected:
+  virtual ~ConnectionManagerDelegate() {}
+};
+
+}  // namespace service
+}  // namespace mojo
+
+#endif  // MOJO_SERVICES_VIEW_MANAGER_CONNECTION_MANAGER_DELEGATE_H_