Merge components/usb_service into device/usb.

components/usb_service/usb_error.cc

Index: components/usb_service/usb_error.cc
diff --git a/components/usb_service/usb_error.cc b/components/usb_service/usb_error.cc
deleted file mode 100644
index d3e99601205a4c1384c96d811458588739419bdc..0000000000000000000000000000000000000000
--- a/components/usb_service/usb_error.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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 "components/usb_service/usb_error.h"
-
-#include "third_party/libusb/src/libusb/libusb.h"
-
-namespace usb_service {
-
-std::string ConvertErrorToString(int errcode) {
-  return libusb_strerror(static_cast<libusb_error>(errcode));
-}
-
-}  // namespace usb_service;