Changes ownership of WindowTreeHostConnection

components/mus/ws/window_tree_host_connection.cc

 // 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.
 
 #include "components/mus/ws/window_tree_host_connection.h"
 
 #include "components/mus/ws/connection_manager.h"
 #include "components/mus/ws/window_tree_host_impl.h"
 #include "components/mus/ws/window_tree_impl.h"
 
 namespace mus {
-
 namespace ws {
 
-WindowTreeHostConnection::WindowTreeHostConnection(
-    scoped_ptr<WindowTreeHostImpl> host_impl,
-    ConnectionManager* manager)
-    : host_(std::move(host_impl)),
-      tree_(nullptr),
-      connection_manager_(manager),
-      connection_closed_(false) {}
-
-WindowTreeHostConnection::~WindowTreeHostConnection() {
-  // If this DCHECK fails then something has tried to delete this object without
-  // calling CloseConnection.
-  DCHECK(connection_closed_);
-}
-
-void WindowTreeHostConnection::CloseConnection() {
-  // A connection error will trigger the display to close and so we want to make
-  // sure we signal the ConnectionManager only once.
-  if (connection_closed_)
-    return;
-  // We have to shut down the focus system for this host before destroying the
-  // host, as destruction of the window tree will attempt to change focus.
-  host_->DestroyFocusController();
-  connection_manager()->OnHostConnectionClosed(this);
-  connection_closed_ = true;
-  delete this;
-}
-
-const WindowTreeImpl* WindowTreeHostConnection::GetWindowTree() const {
-  return tree_;
-}
-
-void WindowTreeHostConnection::OnDisplayInitialized() {}
-
-void WindowTreeHostConnection::OnDisplayClosed() {
-  CloseConnection();
-}
-
 WindowTreeHostConnectionImpl::WindowTreeHostConnectionImpl(
     mojo::InterfaceRequest<mojom::WindowTreeHost> request,
-    scoped_ptr<WindowTreeHostImpl> host_impl,
+    WindowTreeHostImpl* host_impl,
     mojom::WindowTreeClientPtr client,
     ConnectionManager* manager)
-    : WindowTreeHostConnection(std::move(host_impl), manager),
-      binding_(window_tree_host(), std::move(request)),
+    : connection_manager_(manager),
+      binding_(host_impl, std::move(request)),
       client_(std::move(client)) {}
 
 WindowTreeHostConnectionImpl::~WindowTreeHostConnectionImpl() {}
 
-void WindowTreeHostConnectionImpl::OnDisplayInitialized() {
-  connection_manager()->AddHost(this);
-  WindowTreeImpl* tree = connection_manager()->EmbedAtWindow(
-      window_tree_host()->root_window(),
-      mojom::WindowTree::kAccessPolicyEmbedRoot, std::move(client_));
+WindowTreeImpl* WindowTreeHostConnectionImpl::CreateWindowTree(
+    ServerWindow* root) {
+  WindowTreeImpl* tree = connection_manager_->EmbedAtWindow(
+      root, mojom::WindowTree::kAccessPolicyEmbedRoot, std::move(client_));
   tree->ConfigureWindowManager();
-  set_window_tree(tree);
+  return tree;
 }
 
 }  // namespace ws
-
 }  // namespace mus