Add bluetooth host and controller delegates for pairing.

components/pairing/bluetooth_pairing_constants.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 CHROMEOS_PAIRING_BLUETOOTH_PAIRING_CONSTANTS_H_
+#define CHROMEOS_PAIRING_BLUETOOTH_PAIRING_CONSTANTS_H_
+
+namespace pairing_chromeos {
+
+extern const char* kPairingServiceUUID;
+extern const char* kPairingServiceName;
+extern const char* kDeviceNamePrefix;
+extern const char* kErrorInvalidProtocol;
+extern const int kPairingAPIVersion;
+
+enum {
+  PAIRING_ERROR_NONE = 0,
+  PAIRING_ERROR_PAIRING_OR_ENROLLMENT = 1,
+};
+
+}  // namespace pairing_chromeos
+
+#endif  // CHROMEOS_PAIRING_BLUETOOTH_PAIRING_CONSTANTS_H_