clang/win: Fix warnings to prepare for building without -Wno-reorder.

device/hid/hid_service_win.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/hid/hid_service_win.h"
 
 #define INITGUID
 
 #include <dbt.h>
 #include <setupapi.h>
@@ skipping 20 matching lines @@
 
 namespace {
 
 void Noop() {
   // This function does nothing.
 }
 }
 
 HidServiceWin::HidServiceWin(
     scoped_refptr<base::SingleThreadTaskRunner> file_task_runner)
-    : device_observer_(this),
-      file_task_runner_(file_task_runner),
+    : file_task_runner_(file_task_runner),
+      device_observer_(this),
       weak_factory_(this) {
   task_runner_ = base::ThreadTaskRunnerHandle::Get();
   DCHECK(task_runner_.get());
   DeviceMonitorWin* device_monitor =
       DeviceMonitorWin::GetForDeviceInterface(GUID_DEVINTERFACE_HID);
   if (device_monitor) {
     device_observer_.Add(device_monitor);
   }
   file_task_runner_->PostTask(
       FROM_HERE, base::Bind(&HidServiceWin::EnumerateOnFileThread,
@@ skipping 247 matching lines @@
                   FILE_FLAG_OVERLAPPED, NULL));
   if (!file.IsValid() &&
       GetLastError() == base::File::FILE_ERROR_ACCESS_DENIED) {
     file.Set(CreateFileA(device_path.c_str(), GENERIC_READ, FILE_SHARE_READ,
                          NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL));
   }
   return file.Pass();
 }
 
 }  // namespace device