chromeos: Remove Introspectable D-Bus client library

chromeos/dbus/introspectable_client.h

-// Copyright (c) 2012 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 CHROMEOS_DBUS_INTROSPECTABLE_CLIENT_H_
-#define CHROMEOS_DBUS_INTROSPECTABLE_CLIENT_H_
-
-#include <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/dbus_client.h"
-#include "dbus/object_path.h"
-
-namespace chromeos {
-
-// IntrospectableClient is used to retrieve the D-Bus introspection data
-// from a remote object.
-class CHROMEOS_EXPORT IntrospectableClient : public DBusClient {
- public:
-  ~IntrospectableClient() override;
-
-  // The IntrospectCallback is used for the Introspect() method. It receives
-  // four arguments, the first two are the |service_name| and |object_path|
-  // of the remote object being introspected, the third is the |xml_data| of
-  // the object as described in
-  // http://dbus.freedesktop.org/doc/dbus-specification.html, the fourth
-  // |success| indicates whether the request succeeded.
-  typedef base::Callback<void(const std::string&, const dbus::ObjectPath&,
-                              const std::string&, bool)> IntrospectCallback;
-
-  // Retrieves introspection data from the remote object on service name
-  // |service_name| with object path |object_path|, calling |callback| with
-  // the XML-formatted data received.
-  virtual void Introspect(const std::string& service_name,
-                          const dbus::ObjectPath& object_path,
-                          const IntrospectCallback& callback) = 0;
-
-  // Parses XML-formatted introspection data returned by
-  // org.freedesktop.DBus.Introspectable.Introspect and returns the list of
-  // interface names declared within.
-  static std::vector<std::string> GetInterfacesFromIntrospectResult(
-      const std::string& xml_data);
-
-  // Creates the instance
-  static IntrospectableClient* Create();
-
- protected:
-  IntrospectableClient();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(IntrospectableClient);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_INTROSPECTABLE_CLIENT_H_