arc: bluetooth: Add SDP host side support

device/bluetooth/bluez/bluetooth_service_attribute_value_bluez.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 DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_SERVICE_ATTRIBUTE_VALUE_BLUEZ_H_
 #define DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_SERVICE_ATTRIBUTE_VALUE_BLUEZ_H_
 
 #include <cstddef>
 #include <memory>
 #include <vector>
@@ skipping 12 matching lines @@
 //        For example, a UUID can have the sizes, 2, 4 or 16 bytes.
 // value: This is the raw value of the attribute. For example, for a UUID, it
 //        will be the string representation of the UUID. For a sequence, it
 //        will be an array of other attributes.
 class DEVICE_BLUETOOTH_EXPORT BluetoothServiceAttributeValueBlueZ {
  public:
   enum Type { NULLTYPE = 0, UINT, INT, UUID, STRING, BOOL, SEQUENCE, URL };
 
   using Sequence = std::vector<BluetoothServiceAttributeValueBlueZ>;
 
+  BluetoothServiceAttributeValueBlueZ();
   BluetoothServiceAttributeValueBlueZ(Type type,
                                       size_t size,
                                       std::unique_ptr<base::Value> value);
-  BluetoothServiceAttributeValueBlueZ(std::unique_ptr<Sequence> sequence);
+  explicit BluetoothServiceAttributeValueBlueZ(
+      std::unique_ptr<Sequence> sequence);
   BluetoothServiceAttributeValueBlueZ(
       const BluetoothServiceAttributeValueBlueZ& attribute);
   BluetoothServiceAttributeValueBlueZ operator=(
       const BluetoothServiceAttributeValueBlueZ& attribute);
   ~BluetoothServiceAttributeValueBlueZ();
 
   Type type() const { return type_; }
   size_t size() const { return size_; }
   const Sequence& sequence() const { return *sequence_.get(); }
   const base::Value& value() const { return *value_.get(); }
 
  private:
   Type type_;
   size_t size_;
   std::unique_ptr<base::Value> value_;
   std::unique_ptr<Sequence> sequence_;
 };
 
 }  // namespace bluez
 
 #endif  // DEVICE_BLUETOOTH_BLUEZ_BLUETOOTH_SERVICE_ATTRIBUTE_VALUE_BLUEZ_H_