mus: move View Manager to components/mus/vm

components/mus/view_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/view_tree_host_connection.h"
-
-#include "components/mus/connection_manager.h"
-#include "components/mus/view_tree_host_impl.h"
-
-namespace mus {
-
-ViewTreeHostConnection::ViewTreeHostConnection(
-    scoped_ptr<ViewTreeHostImpl> host_impl,
-    ConnectionManager* manager)
-    : host_(host_impl.Pass()),
-      tree_(nullptr),
-      connection_manager_(manager),
-      connection_closed_(false) {}
-
-ViewTreeHostConnection::~ViewTreeHostConnection() {
-  // If this DCHECK fails then something has tried to delete this object without
-  // calling CloseConnection.
-  DCHECK(connection_closed_);
-}
-
-void ViewTreeHostConnection::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 view tree will attempt to change focus.
-  host_->DestroyFocusController();
-  connection_manager()->OnHostConnectionClosed(this);
-  connection_closed_ = true;
-  delete this;
-}
-
-ViewTreeImpl* ViewTreeHostConnection::GetViewTree() {
-  return tree_;
-}
-
-void ViewTreeHostConnection::OnDisplayInitialized() {}
-
-void ViewTreeHostConnection::OnDisplayClosed() {
-  CloseConnection();
-}
-
-ViewTreeHostConnectionImpl::ViewTreeHostConnectionImpl(
-    mojo::InterfaceRequest<mojo::ViewTreeHost> request,
-    scoped_ptr<ViewTreeHostImpl> host_impl,
-    mojo::ViewTreeClientPtr client,
-    ConnectionManager* manager)
-    : ViewTreeHostConnection(host_impl.Pass(), manager),
-      binding_(view_tree_host(), request.Pass()),
-      client_(client.Pass()) {}
-
-ViewTreeHostConnectionImpl::~ViewTreeHostConnectionImpl() {}
-
-void ViewTreeHostConnectionImpl::OnDisplayInitialized() {
-  connection_manager()->AddHost(this);
-  set_view_tree(connection_manager()->EmbedAtView(
-      kInvalidConnectionId, view_tree_host()->root_view()->id(),
-      mojo::ViewTree::ACCESS_POLICY_EMBED_ROOT, client_.Pass()));
-}
-
-}  // namespace mus