Expose TxPower for bluetooth devices during discovery

device/bluetooth/bluetooth_device.h

 // 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 DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 245 matching lines @@
   // devices this data is collected from both the EIR data and SDP tables,
   // for Low Energy devices this data is collected from AD and GATT primary
   // services, for dual mode devices this may be collected from both./
   virtual UUIDList GetUUIDs() const = 0;
 
   // The received signal strength, in dBm. This field is avaliable and valid
   // only during discovery. If not during discovery, or RSSI wasn't reported,
   // this method will return |kUnknownPower|.
   virtual int16 GetInquiryRSSI() const = 0;
 
+  // The transmitted power level. This field is avaliable only for LE devices
+  // that include this field in AD. It is avaliable and valid only during
+  // discovery. If not during discovery, or TxPower wasn't reported, this
+  // method will return |kUnknownPower|.
+  virtual int16 GetInquiryTxPower() const = 0;
+
   // The ErrorCallback is used for methods that can fail in which case it
   // is called, in the success case the callback is simply not called.
   typedef base::Callback<void()> ErrorCallback;
 
   // The ConnectErrorCallback is used for methods that can fail with an error,
   // passed back as an error code argument to this callback.
   // In the success case this callback is not called.
   typedef base::Callback<void(enum ConnectErrorCode)> ConnectErrorCallback;
 
   typedef base::Callback<void(const ConnectionInfo&)> ConnectionInfoCallback;
@@ skipping 172 matching lines @@
 
  private:
   // Returns a localized string containing the device's bluetooth address and
   // a device type for display when |name_| is empty.
   base::string16 GetAddressWithLocalizedDeviceTypeName() const;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_H_