bluetooth: Add control for reading/writing of characteristics to internals page.

device/bluetooth/public/interfaces/gatt_result_type_converter.h

+// Copyright 2017 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 DEVICE_BLUETOOTH_GATT_RESULT_TYPE_CONVERTER_H_
+#define DEVICE_BLUETOOTH_GATT_RESULT_TYPE_CONVERTER_H_
+
+#include "device/bluetooth/bluetooth_gatt_service.h"
+#include "device/bluetooth/public/interfaces/device.mojom.h"
+#include "mojo/public/cpp/bindings/type_converter.h"
+
+namespace mojo {
+
+// TypeConverter to translate from
+// device::BluetoothGattService::GattErrorCode to bluetooth.mojom.GattResult.
+// TODO(crbug.com/666561): Replace because TypeConverter is deprecated.
+template <>
+struct TypeConverter<bluetooth::mojom::GattResult,

[ortuno, 2017/01/22 22:38:01]

Why are we not using a typemap?

[mbrunson, 2017/01/24 00:25:31]

This is a similar situation we had with mojom::ConnectResult where the mojom
values are a superset of the corresponding C++ enum. In this case, GattResult
has more values than GattErrorCode: SUCCESS (and possibly more such as
SERVICE_NOT_FOUND, CHARACTERISTIC_NOT_FOUND, or DESCRIPTOR_NOT_FOUND for better
communication of errors as you mentioned here [1]).

[1]
https://codereview.chromium.org/2627243002/diff/160001/device/bluetooth/devic...

+                     device::BluetoothGattService::GattErrorCode> {
+  static bluetooth::mojom::GattResult Convert(
+      const device::BluetoothGattService::GattErrorCode& input) {
+    switch (input) {
+      case device::BluetoothGattService::GattErrorCode::GATT_ERROR_UNKNOWN:
+        return bluetooth::mojom::GattResult::UNKNOWN;
+      case device::BluetoothGattService::GattErrorCode::GATT_ERROR_FAILED:
+        return bluetooth::mojom::GattResult::FAILED;
+      case device::BluetoothGattService::GattErrorCode::GATT_ERROR_IN_PROGRESS:
+        return bluetooth::mojom::GattResult::IN_PROGRESS;
+      case device::BluetoothGattService::GattErrorCode::
+          GATT_ERROR_INVALID_LENGTH:
+        return bluetooth::mojom::GattResult::INVALID_LENGTH;
+      case device::BluetoothGattService::GattErrorCode::
+          GATT_ERROR_NOT_PERMITTED:
+        return bluetooth::mojom::GattResult::NOT_PERMITTED;
+      case device::BluetoothGattService::GattErrorCode::
+          GATT_ERROR_NOT_AUTHORIZED:
+        return bluetooth::mojom::GattResult::NOT_AUTHORIZED;
+      case device::BluetoothGattService::GattErrorCode::GATT_ERROR_NOT_PAIRED:
+        return bluetooth::mojom::GattResult::NOT_PAIRED;
+      case device::BluetoothGattService::GattErrorCode::
+          GATT_ERROR_NOT_SUPPORTED:
+        return bluetooth::mojom::GattResult::NOT_SUPPORTED;
+    }
+    NOTREACHED();
+    return bluetooth::mojom::GattResult::NOT_SUPPORTED;
+  }
+};
+}
+
+#endif  // DEVICE_BLUETOOTH_GATT_RESULT_TYPE_CONVERTER_H_