Move DBusClient stub implementations into separate files.

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>
 
@@ skipping 27 matching lines @@
                           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);
+  static IntrospectableClient* Create();
 
  protected:
   IntrospectableClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(IntrospectableClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_INTROSPECTABLE_CLIENT_H_