Chromoting: Implemented security attention sequence (SAS) emulation on Windows.

remoting/host/sas_injector_win.h

Index: remoting/host/sas_injector_win.h
diff --git a/remoting/host/sas_injector_win.h b/remoting/host/sas_injector_win.h
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+++ b/remoting/host/sas_injector_win.h
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+// Copyright (c) 2012 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 REMOTING_HOST_SAS_INJECTOR_WIN_H_
+#define REMOTING_HOST_SAS_INJECTOR_WIN_H_
+
+#include <windows.h>
+
+#include "base/memory/scoped_ptr.h"
+
+namespace remoting {
+
+// Provides a way to emulate secure attention sequence (SAS). The default
+// sequence is Ctrl+Alt+Delete.
+class SasInjector {
+ public:
+  virtual ~SasInjector() {}
+
+  // Sends the secure attention sequence to the console session.
+  virtual bool InjectSas() = 0;
+
+  // Creates an instance of SasInjector if supported by the OS, otherwise
+  // returns NULL.
+  static scoped_ptr<SasInjector> Create();
+};
+
+}  // namespace remoting
+
+#endif REMOTING_HOST_SAS_INJECTOR_WIN_H_