Remove WmWindowProperty

ash/common/wm/dock/docked_window_resizer.cc

Index: ash/common/wm/dock/docked_window_resizer.cc
diff --git a/ash/common/wm/dock/docked_window_resizer.cc b/ash/common/wm/dock/docked_window_resizer.cc
index 44774f1e53b79683a8cdc21b75848b4502bd0537..271c38b2c5f2bc4dca80b25708d35855b232abed 100644
--- a/ash/common/wm/dock/docked_window_resizer.cc
+++ b/ash/common/wm/dock/docked_window_resizer.cc
@@ -11,8 +11,8 @@
 #include "ash/common/wm/workspace/magnetism_matcher.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_window.h"
-#include "ash/common/wm_window_property.h"
 #include "ash/public/cpp/shell_window_ids.h"
+#include "ash/public/cpp/window_properties.h"
 #include "ash/root_window_controller.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/ui_base_types.h"
@@ -207,7 +207,7 @@ void DockedWindowResizer::FinishedDragging(
   WmWindow* window = GetTarget();
   const bool is_attached_panel =
       window->GetType() == ui::wm::WINDOW_TYPE_PANEL &&
-      window->GetBoolProperty(WmWindowProperty::PANEL_ATTACHED);
+      window->aura_window()->GetProperty(kPanelAttachedKey);
   const bool is_resized =
       (details().bounds_change & WindowResizer::kBoundsChange_Resizes) != 0;