Hook up RSSI and host transmit power Bluetooth device properties for ChromeOS.

device/bluetooth/bluetooth_adapter_chromeos.cc

Index: device/bluetooth/bluetooth_adapter_chromeos.cc
diff --git a/device/bluetooth/bluetooth_adapter_chromeos.cc b/device/bluetooth/bluetooth_adapter_chromeos.cc
index c7e8d9ac4c9b81e245fd8c9765cb1237c037f786..83bfb88a845f4c6ea785c4fe27c9f8709e480d81 100644
--- a/device/bluetooth/bluetooth_adapter_chromeos.cc
+++ b/device/bluetooth/bluetooth_adapter_chromeos.cc
@@ -335,7 +335,10 @@ void BluetoothAdapterChromeOS::DevicePropertyChanged(
       property_name == properties->paired.name() ||
       property_name == properties->trusted.name() ||
       property_name == properties->connected.name() ||
-      property_name == properties->uuids.name())
+      property_name == properties->uuids.name() ||
+      property_name == properties->rssi.name() ||
+      property_name == properties->connection_rssi.name() ||
+      property_name == properties->connection_tx_power.name())
     NotifyDeviceChanged(device_chromeos);
 
   // When a device becomes paired, mark it as trusted so that the user does