bluetooth: Implement RSSI and Tx Power on macOS and Android

device/bluetooth/bluez/bluetooth_device_bluez.cc

 // 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/bluez/bluetooth_device_bluez.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 70 matching lines @@
   if (vendor_id_source != NULL)
     *vendor_id_source = source_value;
   if (vendor_id != NULL)
     *vendor_id = vendor_value;
   if (product_id != NULL)
     *product_id = product_value;
   if (device_id != NULL)
     *device_id = device_value;
 }
 
-int8_t ClampPower(int16_t power) {
-  if (power < INT8_MIN) {
-    return INT8_MIN;
-  }
-  if (power > INT8_MAX) {
-    return INT8_MAX;
-  }
-  return static_cast<int8_t>(power);
-}
-
 void RecordPairingResult(BluetoothDevice::ConnectErrorCode error_code) {
   UMAPairingResult pairing_result;
   switch (error_code) {
     case BluetoothDevice::ERROR_INPROGRESS:
       pairing_result = UMA_PAIRING_RESULT_INPROGRESS;
       break;
     case BluetoothDevice::ERROR_FAILED:
       pairing_result = UMA_PAIRING_RESULT_FAILED;
       break;
     case BluetoothDevice::ERROR_AUTH_FAILED:
@@ skipping 778 matching lines @@
 void BluetoothDeviceBlueZ::OnForgetError(const ErrorCallback& error_callback,
                                          const std::string& error_name,
                                          const std::string& error_message) {
   LOG(WARNING) << object_path_.value()
                << ": Failed to remove device: " << error_name << ": "
                << error_message;
   error_callback.Run();
 }
 
 }  // namespace bluez