Convert Pass()→std::move() for Mac build.

device/bluetooth/bluetooth_rfcomm_channel_mac.mm

 // Copyright 2014 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 "device/bluetooth/bluetooth_rfcomm_channel_mac.h"
 
 #include "base/logging.h"
 #include "device/bluetooth/bluetooth_classic_device_mac.h"
 #include "device/bluetooth/bluetooth_socket_mac.h"
 
@@ skipping 76 matching lines @@
                              withChannelID:channel_id
                                   delegate:channel->delegate_];
   if (*status == kIOReturnSuccess) {
     // Note: No need to retain the |rfcomm_channel| -- the returned channel is
     // already retained.
     channel->channel_.reset(rfcomm_channel);
   } else {
     channel.reset();
   }
 
-  return channel.Pass();
+  return channel;
 }
 
 void BluetoothRfcommChannelMac::SetSocket(BluetoothSocketMac* socket) {
   BluetoothChannelMac::SetSocket(socket);
   if (!this->socket())
     return;
 
   // Now that the socket is set, it's safe to associate a delegate, which can
   // call back to the socket.
   DCHECK(!delegate_);
@@ skipping 51 matching lines @@
     void* refcon,
     IOReturn status) {
   // Note: We use "CHECK" below to ensure we never run into unforeseen
   // occurrences of asynchronous callbacks, which could lead to data
   // corruption.
   CHECK_EQ(channel_, channel);
   socket()->OnChannelWriteComplete(refcon, status);
 }
 
 }  // namespace device