mojo: Remove Pass() from MOJO_MOVE_ONLY_TYPE

device/serial/serial_io_handler_win.cc

Index: device/serial/serial_io_handler_win.cc
diff --git a/device/serial/serial_io_handler_win.cc b/device/serial/serial_io_handler_win.cc
index f95c3a095be6720c63a239ef0c51d54875a49d95..dec9450db0cdc0f3c26a439e449ec2efb8d6a3ef 100644
--- a/device/serial/serial_io_handler_win.cc
+++ b/device/serial/serial_io_handler_win.cc
@@ -477,7 +477,7 @@ serial::DeviceControlSignalsPtr SerialIoHandlerWin::GetControlSignals() const {
   signals->cts = (status & MS_CTS_ON) != 0;
   signals->dsr = (status & MS_DSR_ON) != 0;
   signals->ri = (status & MS_RING_ON) != 0;
-  return signals.Pass();
+  return signals;
 }
 
 bool SerialIoHandlerWin::SetControlSignals(
@@ -512,7 +512,7 @@ serial::ConnectionInfoPtr SerialIoHandlerWin::GetPortInfo() const {
   info->parity_bit = ParityBitConstantToEnum(config.Parity);
   info->stop_bits = StopBitsConstantToEnum(config.StopBits);
   info->cts_flow_control = config.fOutxCtsFlow != 0;
-  return info.Pass();
+  return info;
 }
 
 bool SerialIoHandlerWin::SetBreak() {