Move chromeos::GetInterfacesFromIntrospectResult into IntrospectableClient

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_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 24 matching lines @@
   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(DBusClientImplementationType type,
                                       dbus::Bus* bus);
 
  protected:
   IntrospectableClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(IntrospectableClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_INTROSPECTABLE_CLIENT_H_