Cleanup: Drop some unnecessary params from the BluetoothSocketNet constructor.

device/bluetooth/bluetooth_device_win.cc

Index: device/bluetooth/bluetooth_device_win.cc
diff --git a/device/bluetooth/bluetooth_device_win.cc b/device/bluetooth/bluetooth_device_win.cc
index 47376bcdae0afbfa7d60ac68a797fb448198277e..6de80e7c1755845d2d638a697fb65f46661b2545 100644
--- a/device/bluetooth/bluetooth_device_win.cc
+++ b/device/bluetooth/bluetooth_device_win.cc
@@ -203,7 +203,7 @@ void BluetoothDeviceWin::ConnectToService(
     const ConnectToServiceErrorCallback& error_callback) {
   scoped_refptr<BluetoothSocketWin> socket(
       BluetoothSocketWin::CreateBluetoothSocket(
-          ui_task_runner_, socket_thread_, NULL, net::NetLog::Source()));
+          ui_task_runner_, socket_thread_));
   socket->Connect(this, uuid, base::Bind(callback, socket), error_callback);
 }