Fix implicit access to raw pointer of scoped_refptr.

device/usb/usb_device_handle_impl.cc

 // 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/usb/usb_device_handle_impl.h"
 
 #include <algorithm>
 #include <memory>
 #include <numeric>
 #include <utility>
@@ skipping 844 matching lines @@
 }
 
 void UsbDeviceHandleImpl::ClaimInterfaceComplete(
     scoped_refptr<InterfaceClaimer> interface_claimer,
     const ResultCallback& callback) {
   if (interface_claimer) {
     claimed_interfaces_[interface_claimer->interface_number()] =
         interface_claimer;
     RefreshEndpointMap();
   }
-  callback.Run(interface_claimer);
+  callback.Run(static_cast<bool>(interface_claimer));
 }
 
 void UsbDeviceHandleImpl::SetInterfaceAlternateSettingOnBlockingThread(
     int interface_number,
     int alternate_setting,
     const ResultCallback& callback) {
   int rv = libusb_set_interface_alt_setting(handle_, interface_number,
                                             alternate_setting);
   if (rv != LIBUSB_SUCCESS) {
     USB_LOG(EVENT) << "Failed to set interface " << interface_number
@@ skipping 245 matching lines @@
   } else {
     transfer->callback_task_runner()->PostTask(FROM_HERE, callback);
   }
 
   // libusb_free_transfer races with libusb_submit_transfer and only work-
   // around is to make sure to call them on the same thread.
   blocking_task_runner_->DeleteSoon(FROM_HERE, transfer);
 }
 
 }  // namespace device