More cleanup: Get rid of ServiceConnectorRegistry.

mojo/public/cpp/application/lib/service_connector_registry.h

-// Copyright 2015 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 MOJO_PUBLIC_CPP_APPLICATION_LIB_SERVICE_CONNECTOR_REGISTRY_H_
-#define MOJO_PUBLIC_CPP_APPLICATION_LIB_SERVICE_CONNECTOR_REGISTRY_H_
-
-#include <map>
-#include <memory>
-#include <string>
-
-#include "mojo/public/cpp/system/message_pipe.h"
-
-namespace mojo {
-
-struct ConnectionContext;
-class ServiceConnector;
-
-namespace internal {
-
-// ServiceConnectorRegistry maintains a default ServiceConnector as well as at
-// most one ServiceConnector per interface name. When ConnectToService() is
-// invoked the ServiceConnector registered by name is given the request.
-class ServiceConnectorRegistry {
- public:
-  ServiceConnectorRegistry();
-  ~ServiceConnectorRegistry();
-
-  // Returns true if non ServiceConnectors have been registered by name.
-  bool empty() const { return name_to_service_connector_.empty(); }
-
-  // Sets a ServiceConnector by name. This deletes any existing ServiceConnector
-  // of the same name.
-  void SetServiceConnectorForName(
-      std::unique_ptr<ServiceConnector> service_connector,
-      const std::string& interface_name);
-  void RemoveServiceConnectorForName(const std::string& interface_name);
-
-  // ConnectToService returns true if this registery has an entry for
-  // |interface_name|. In that case, the |client_handle| is passed along
-  // to the |ServiceConnector|. Otherwise, this function returns false and
-  // |client_handle| is untouched.
-  bool ConnectToService(const ConnectionContext& connection_context,
-                        const std::string& interface_name,
-                        ScopedMessagePipeHandle* client_handle);
-
- private:
-  using NameToServiceConnectorMap =
-      std::map<std::string, std::unique_ptr<ServiceConnector>>;
-
-  NameToServiceConnectorMap name_to_service_connector_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(ServiceConnectorRegistry);
-};
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_APPLICATION_LIB_SERVICE_CONNECTOR_REGISTRY_H_