Added confirmation for printer registration.

cloud_print/gcp20/prototype/conio_posix.h

Index: cloud_print/gcp20/prototype/conio_posix.h
diff --git a/cloud_print/gcp20/prototype/conio_posix.h b/cloud_print/gcp20/prototype/conio_posix.h
new file mode 100644
index 0000000000000000000000000000000000000000..f8bebea208caa65364dfabe74a5115d41db86921
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+++ b/cloud_print/gcp20/prototype/conio_posix.h
@@ -0,0 +1,19 @@
+// Copyright 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 CLOUD_PRINT_GCP20_PROTOTYPE_CONIO_POSIX_H_
+#define CLOUD_PRINT_GCP20_PROTOTYPE_CONIO_POSIX_H_
+
+// Method for disabling buffered IO.
+// |true| - disable, |false| - restore previous settings.
+void SetTemporaryTermiosSettings(bool temporary);
+
+// Analog from conio.h
+int _kbhit();
+
+// Analog from conio.h
+int _getche();
+
+#endif  // CLOUD_PRINT_GCP20_PROTOTYPE_CONIO_POSIX_H_
+