Expose TxPower for bluetooth devices during discovery

device/bluetooth/bluetooth_device_mac.mm

 // 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.
 
 #include "device/bluetooth/bluetooth_device_mac.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 111 matching lines @@
         uuids.push_back(uuid);
     }
   }
   return uuids;
 }
 
 int16 BluetoothDeviceMac::GetInquiryRSSI() const {
   return kUnknownPower;
 }
 
+int16 BluetoothDeviceMac::GetInquiryTxPower() const {
+  NOTIMPLEMENTED();
+  return kUnknownPower;
+}
+
 bool BluetoothDeviceMac::ExpectingPinCode() const {
   NOTIMPLEMENTED();
   return false;
 }
 
 bool BluetoothDeviceMac::ExpectingPasskey() const {
   NOTIMPLEMENTED();
   return false;
 }
 
@@ skipping 108 matching lines @@
 
   return power_level;
 }
 
 // static
 std::string BluetoothDeviceMac::GetDeviceAddress(IOBluetoothDevice* device) {
   return CanonicalizeAddress(base::SysNSStringToUTF8([device addressString]));
 }
 
 }  // namespace device