bluetooth: Add DeviceChanged logging in Device service.

device/bluetooth/adapter.cc

 // Copyright 2016 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 <string>
 #include <utility>
 #include <vector>
 
 #include "device/bluetooth/adapter.h"
 #include "device/bluetooth/device.h"
@@ skipping 56 matching lines @@
 }
 
 void Adapter::DeviceRemoved(device::BluetoothAdapter* adapter,
                             device::BluetoothDevice* device) {
   if (client_) {
     auto device_info = Device::ConstructDeviceInfoStruct(device);
     client_->DeviceRemoved(std::move(device_info));
   }
 }
 
+void Adapter::DeviceChanged(device::BluetoothAdapter* adapter,
+                            device::BluetoothDevice* device) {
+  if (client_) {
+    auto device_info = Device::ConstructDeviceInfoStruct(device);
+    client_->DeviceChanged(std::move(device_info));
+  }
+}
+
 }  // namespace bluetooth