Refactor and push window properties up to class properties.

ash/mus/bridge/workspace_event_handler_mus.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 "ash/mus/bridge/workspace_event_handler_mus.h"
 
 #include "ui/aura/window.h"
-#include "ui/aura/window_property.h"
+#include "ui/base/class_property.h"
 
-DECLARE_WINDOW_PROPERTY_TYPE(ash::mus::WorkspaceEventHandlerMus*);
+DECLARE_CLASS_PROPERTY_TYPE(ash::mus::WorkspaceEventHandlerMus*);
 
 namespace {
 
-DEFINE_WINDOW_PROPERTY_KEY(ash::mus::WorkspaceEventHandlerMus*,
-                           kWorkspaceEventHandlerProperty,
-                           nullptr);
+DEFINE_CLASS_PROPERTY_KEY(ash::mus::WorkspaceEventHandlerMus*,
+                          kWorkspaceEventHandlerProperty,
+                          nullptr);
 
 }  // namespace
 
 namespace ash {
 namespace mus {
 
 WorkspaceEventHandlerMus::WorkspaceEventHandlerMus(
     aura::Window* workspace_window)
     : workspace_window_(workspace_window) {
   workspace_window_->SetProperty(kWorkspaceEventHandlerProperty, this);
 }
 
 WorkspaceEventHandlerMus::~WorkspaceEventHandlerMus() {
   workspace_window_->ClearProperty(kWorkspaceEventHandlerProperty);
 }
 
 // static
 WorkspaceEventHandlerMus* WorkspaceEventHandlerMus::Get(aura::Window* window) {
   return window->GetProperty(kWorkspaceEventHandlerProperty);
 }
 
 }  // namespace mus
 }  // namespace ash