Expose TxPower for bluetooth devices during discovery

device/bluetooth/bluetooth_device_mac.h

 // 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 DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_MAC_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_MAC_H_
 
 #import <IOBluetooth/IOBluetooth.h>
 
 #include <string>
@@ skipping 18 matching lines @@
   VendorIDSource GetVendorIDSource() const override;
   uint16 GetVendorID() const override;
   uint16 GetProductID() const override;
   uint16 GetDeviceID() const override;
   bool IsPaired() const override;
   bool IsConnected() const override;
   bool IsConnectable() const override;
   bool IsConnecting() const override;
   UUIDList GetUUIDs() const override;
   int16 GetInquiryRSSI() const override;
+  int16 GetInquiryTxPower() const override;
   bool ExpectingPinCode() const override;
   bool ExpectingPasskey() const override;
   bool ExpectingConfirmation() const override;
   void GetConnectionInfo(const ConnectionInfoCallback& callback) override;
   void Connect(PairingDelegate* pairing_delegate,
                const base::Closure& callback,
                const ConnectErrorCallback& error_callback) override;
   void SetPinCode(const std::string& pincode) override;
   void SetPasskey(uint32 passkey) override;
   void ConfirmPairing() override;
@@ skipping 35 matching lines @@
       BluetoothHCITransmitPowerLevelType power_level_type) const;
 
   base::scoped_nsobject<IOBluetoothDevice> device_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_MAC_H_