Revert of bluetooth: Use WebBluetoothDeviceId instead of string

content/common/bluetooth/web_bluetooth_device_id_struct_traits.h

-// Copyright 2016 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.
-
-#ifndef CONTENT_BROWSER_BLUETOOTH_WEB_BLUETOOTH_DEVICE_ID_STRUCT_TRAITS_H_
-#define CONTENT_BROWSER_BLUETOOTH_WEB_BLUETOOTH_DEVICE_ID_STRUCT_TRAITS_H_
-
-#include <string>
-
-#include "content/common/bluetooth/web_bluetooth_device_id.h"
-#include "third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom.h"
-
-namespace mojo {
-
-template <>
-struct StructTraits<blink::mojom::WebBluetoothDeviceId,
-                    content::WebBluetoothDeviceId> {
-  static const std::string& device_id(
-      const content::WebBluetoothDeviceId& device_id) {
-    return device_id.str();
-  }
-
-  static bool Read(blink::mojom::WebBluetoothDeviceIdDataView input,
-                   content::WebBluetoothDeviceId* output) {
-    std::string result;
-
-    if (!input.ReadDeviceId(&result))
-      return false;
-    if (!content::WebBluetoothDeviceId::IsValid(result))
-      return false;
-
-    *output = content::WebBluetoothDeviceId(std::move(result));
-    return true;
-  }
-};
-
-}  // namespace mojo
-
-#endif  // CONTENT_BROWSER_BLUETOOTH_WEB_BLUETOOTH_DEVICE_ID_STRUCT_TRAITS_H_