1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MOJO_BINDINGS_JS_HANDLE_CLOSE_OBSERVER_H_ 6 #define MOJO_BINDINGS_JS_HANDLE_CLOSE_OBSERVER_H_ 7 8 namespace gin { 9 10 class HandleCloseObserver { 11 public: 12 virtual void OnWillCloseHandle() = 0; 13 14 protected: ~HandleCloseObserver()15 virtual ~HandleCloseObserver() {} 16 }; 17 18 } // namespace gin 19 20 #endif // MOJO_BINDINGS_JS_HANDLE_CLOSE_OBSERVER_H_ 21