Bluetooth class changes for implementing local GATT attributes.

device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.h

Index: device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.h
diff --git a/device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.h b/device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.h
index c079b0027466ad2bf12c552e4c030ce6f7353d49..598d19644fe6069bce665df61e3d63e2223a5c32 100644
--- a/device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.h
+++ b/device/bluetooth/bluez/bluetooth_gatt_descriptor_bluez.h
@@ -27,9 +27,12 @@ class BluetoothGattDescriptorBlueZ
   const dbus::ObjectPath& object_path() const { return object_path_; }
 
  protected:
-  explicit BluetoothGattDescriptorBlueZ(const dbus::ObjectPath& object_path);
+  BluetoothGattDescriptorBlueZ();
   ~BluetoothGattDescriptorBlueZ() override;
 
+  // Object path of the D-Bus descriptor object.
+  dbus::ObjectPath object_path_;
+
  private:
   // Called by dbus:: on unsuccessful completion of a request to read or write
   // the descriptor value.
@@ -37,9 +40,6 @@ class BluetoothGattDescriptorBlueZ
                const std::string& error_name,
                const std::string& error_message);
 
-  // Object path of the D-Bus descriptor object.
-  dbus::ObjectPath object_path_;
-
   DISALLOW_COPY_AND_ASSIGN(BluetoothGattDescriptorBlueZ);
 };