Add signal strength indicator icon to WebBluetooth chooser on non-Mac desktops

chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc

 // 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.
 
 #include "chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.h"
 
 #include "base/logging.h"
 #include "chrome/browser/ui/bluetooth/bluetooth_chooser_controller.h"
+#include "content/browser/bluetooth/bluetooth_device_chooser_controller.h"
 
 BluetoothChooserDesktop::BluetoothChooserDesktop(
     BluetoothChooserController* bluetooth_chooser_controller)
     : bluetooth_chooser_controller_(bluetooth_chooser_controller) {
   DCHECK(bluetooth_chooser_controller_);
 }
 
 BluetoothChooserDesktop::~BluetoothChooserDesktop() {
   // This satisfies the WebContentsDelegate::RunBluetoothChooser() requirement
   // that the EventHandler can be destroyed any time after the BluetoothChooser
@@ skipping 11 matching lines @@
 
 void BluetoothChooserDesktop::AddOrUpdateDevice(
     const std::string& device_id,
     bool should_update_name,
     const base::string16& device_name,
     bool is_gatt_connected,
     bool is_paired,
     const int8_t* rssi) {
   bluetooth_chooser_controller_->AddOrUpdateDevice(
       device_id, should_update_name, device_name, is_gatt_connected, is_paired,
-      rssi);
+      rssi ? content::BluetoothDeviceChooserController::
+                 CalculateSignalStrengthLevel(*rssi)
+           : -1);
 }
 
 void BluetoothChooserDesktop::RemoveDevice(const std::string& device_id) {
   bluetooth_chooser_controller_->RemoveDevice(device_id);
 }