Removes WindowTreeImpl::creator_id_

components/mus/ws/connection_manager.cc

 // Copyright 2014 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.
 
 #include "components/mus/ws/connection_manager.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "components/mus/ws/client_connection.h"
 #include "components/mus/ws/connection_manager_delegate.h"
@@ skipping 123 matching lines @@
   // parent's lifetime.
   host_connection_map_.erase(it);
   OnConnectionError(service_connection_it->second);
 
   // If we have no more roots left, let the app know so it can terminate.
   if (!host_connection_map_.size())
     delegate_->OnNoMoreRootConnections();
 }
 
 WindowTreeImpl* ConnectionManager::EmbedAtWindow(
-    ConnectionSpecificId creator_id,
     const WindowId& window_id,
     uint32_t policy_bitmask,
     mojom::WindowTreeClientPtr client) {
   mojom::WindowTreePtr service_ptr;
   ClientConnection* client_connection =
       delegate_->CreateClientConnectionForEmbedAtWindow(
-          this, GetProxy(&service_ptr), creator_id, window_id, policy_bitmask,
+          this, GetProxy(&service_ptr), window_id, policy_bitmask,
           std::move(client));
   AddConnection(client_connection);
   client_connection->service()->Init(client_connection->client(),
                                      std::move(service_ptr));
   OnConnectionMessagedClient(client_connection->service()->id());
 
   return client_connection->service();
 }
 
 WindowTreeImpl* ConnectionManager::GetConnection(
@@ skipping 384 matching lines @@
     return;
   for (auto& pair : connection_map_) {
     pair.second->service()->ProcessTransientWindowRemoved(
         window, transient_child, IsOperationSource(pair.first));
   }
 }
 
 }  // namespace ws
 
 }  // namespace mus