Updates shadow when active window changes

mash/wm/property_util.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 "mash/wm/property_util.h"
 
 #include "components/mus/public/cpp/property_type_converters.h"
 #include "components/mus/public/cpp/window.h"
 #include "components/mus/public/cpp/window_property.h"
+#include "mash/wm/shadow.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace mash {
 namespace wm {
+namespace {
+
+DEFINE_LOCAL_WINDOW_PROPERTY_KEY(Shadow*, kLocalShadowProperty, nullptr);
+
+}  // namespace
 
 mus::mojom::ShowState GetWindowShowState(const mus::Window* window) {
   if (window->HasSharedProperty(
           mus::mojom::WindowManager::kShowState_Property)) {
     return static_cast<mus::mojom::ShowState>(
         window->GetSharedProperty<int32_t>(
             mus::mojom::WindowManager::kShowState_Property));
   }
   return mus::mojom::SHOW_STATE_RESTORED;
 }
@@ skipping 56 matching lines @@
 
 gfx::Rect GetRestoreBounds(const mus::Window* window) {
   if (window->HasSharedProperty(
           mus::mojom::WindowManager::kRestoreBounds_Property)) {
     return window->GetSharedProperty<gfx::Rect>(
         mus::mojom::WindowManager::kRestoreBounds_Property);
   }
   return gfx::Rect();
 }
 
+void SetShadow(mus::Window* window, Shadow* shadow) {
+  window->SetLocalProperty(kLocalShadowProperty, shadow);
+}
+
+Shadow* GetShadow(mus::Window* window) {
+  return window->GetLocalProperty(kLocalShadowProperty);
+}
+
 }  // namespace wm
 }  // namespace mash