bluetooth: Implement TxPower and RSSI of BluetoothAdvertisementData

content/common/bluetooth/bluetooth_device.h

 // Copyright 2015 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 CONTENT_COMMON_BLUETOOTH_BLUETOOTH_DEVICE_H_
 #define CONTENT_COMMON_BLUETOOTH_BLUETOOTH_DEVICE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "device/bluetooth/bluetooth_device.h"
 
 namespace content {
 
 // Data sent over IPC representing a Bluetooth device, corresponding to
 // blink::WebBluetoothDevice.
 struct CONTENT_EXPORT BluetoothDevice {
   BluetoothDevice();
   BluetoothDevice(const std::string& id,
                   const base::string16& name,
+                  int8_t tx_power,
+                  int8_t rssi,
                   uint32 device_class,
                   device::BluetoothDevice::VendorIDSource vendor_id_source,
                   uint16 vendor_id,
                   uint16 product_id,
                   uint16 product_version,
                   bool paired,
                   const std::vector<std::string>& uuids);
   ~BluetoothDevice();
 
   static std::vector<std::string> UUIDsFromBluetoothUUIDs(
       const device::BluetoothDevice::UUIDList& uuid_list);
+  // 127 is used as Unknown Power. According to the Bluetooth spec valid powers
+  // are between [-127, 127]. Anything outside this range will be considered
+  // Unknown Power.
+  static int8_t ValidatePower(int16_t power);
+  // TODO(ortuno): RSSI Unknown and Tx Power Unknown should have different
+  // values. Add kUnknownTxPower when implemented: http://crbug.com/551572
+  const static int8_t kUnknownPower = 127;
 
   std::string id;
   base::string16 name;
+  int8_t tx_power;
+  int8_t rssi;
   uint32 device_class;
   device::BluetoothDevice::VendorIDSource vendor_id_source;
   uint16 vendor_id;
   uint16 product_id;
   uint16 product_version;
   bool paired;
   std::vector<std::string> uuids;  // 128bit UUIDs with dashes. 36 chars.
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_BLUETOOTH_BLUETOOTH_DEVICE_H_