Switch to standard integer types in device/.

device/devices_app/usb/device_manager_impl.cc

 // Copyright 2015 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/devices_app/usb/device_manager_impl.h"
 
+#include <stddef.h>
+
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "device/core/device_client.h"
 #include "device/devices_app/usb/device_impl.h"
 #include "device/devices_app/usb/public/interfaces/device.mojom.h"
 #include "device/devices_app/usb/type_converters.h"
 #include "device/usb/usb_device.h"
 #include "device/usb/usb_device_filter.h"
@@ skipping 198 matching lines @@
     callback.Run(notification.Pass());
     device_change_callbacks_.pop();
   }
 
   if (devices_added_.size() > 0 || !devices_removed_.empty())
     MaybeRunDeviceChangesCallback();
 }
 
 }  // namespace usb
 }  // namespace device