Fix WeakPtrFactory member ordering in device

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 <vector>
 
 #include "base/bind.h"
@@ skipping 461 matching lines @@
 }
 
 UsbDeviceHandleImpl::UsbDeviceHandleImpl(scoped_refptr<UsbContext> context,
                                          UsbDeviceImpl* device,
                                          PlatformUsbDeviceHandle handle,
                                          const UsbConfigDescriptor& config)
     : device_(device),
       handle_(handle),
       config_(config),
       context_(context),
-      weak_factory_(this),
-      task_runner_(base::ThreadTaskRunnerHandle::Get()) {
+      task_runner_(base::ThreadTaskRunnerHandle::Get()),
+      weak_factory_(this) {
   DCHECK(handle) << "Cannot create device with NULL handle.";
 }
 
 UsbDeviceHandleImpl::~UsbDeviceHandleImpl() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   libusb_close(handle_);
   handle_ = NULL;
 }
 
@@ skipping 339 matching lines @@
   // Attempt-release all the interfaces.
   // It will be retained until the transfer cancellation is finished.
   claimed_interfaces_.clear();
 
   // Cannot close device handle here. Need to wait for libusb_cancel_transfer to
   // finish.
   device_ = NULL;
 }
 
 }  // namespace device