Gets mash to use WmToplevelWindowEventHandler

mash/wm/root_window_controller.cc

 // Copyright 2016 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 "mash/wm/root_window_controller.h"
 
 #include <stdint.h>
 
 #include <map>
 #include <sstream>
 
 #include "ash/wm/common/always_on_top_controller.h"
+#include "ash/wm/common/dock/docked_window_layout_manager.h"
+#include "ash/wm/common/panels/panel_layout_manager.h"
 #include "ash/wm/common/wm_shell_window_ids.h"
 #include "ash/wm/common/workspace/workspace_layout_manager.h"
 #include "ash/wm/common/workspace/workspace_layout_manager_delegate.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "components/mus/common/event_matcher_util.h"
 #include "components/mus/common/switches.h"
 #include "components/mus/common/util.h"
 #include "components/mus/public/cpp/property_type_converters.h"
@@ skipping 281 matching lines @@
   // WorkspaceLayoutManager is not a mash::wm::LayoutManager (it's an
   // ash::wm::LayoutManager), so it can't be in |layout_managers_|.
   layout_managers_.erase(user_private_windows);
   std::unique_ptr<WorkspaceLayoutManagerDelegateImpl>
       workspace_layout_manager_delegate(new WorkspaceLayoutManagerDelegateImpl(
           wm_root_window_controller_.get()));
   WmWindowMus::Get(user_private_windows)
       ->SetLayoutManager(base::WrapUnique(new ash::WorkspaceLayoutManager(
           WmWindowMus::Get(user_private_windows),
           std::move(workspace_layout_manager_delegate))));
+
+  mus::Window* user_private_docked_windows =
+      GetWindowForContainer(mojom::Container::USER_PRIVATE_DOCKED_WINDOWS);
+  WmWindowMus* user_private_docked_windows_wm =
+      WmWindowMus::Get(user_private_docked_windows);
+  layout_managers_.erase(user_private_docked_windows);
+  user_private_docked_windows_wm->SetLayoutManager(base::WrapUnique(
+      new ash::DockedWindowLayoutManager(user_private_docked_windows_wm)));
+
+  mus::Window* user_private_panels =
+      GetWindowForContainer(mojom::Container::USER_PRIVATE_PANELS);
+  WmWindowMus* user_private_panels_wm = WmWindowMus::Get(user_private_panels);
+  layout_managers_.erase(user_private_panels);
+  user_private_panels_wm->SetLayoutManager(
+      base::WrapUnique(new ash::PanelLayoutManager(user_private_panels_wm)));
 }
 
 }  // namespace wm
 }  // namespace mash