Reland: mash: Fix MusPropertyMirrorAsh for owned properties; add test.

ash/public/cpp/shell_window_ids.h

 // Copyright (c) 2012 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.
 
 #ifndef ASH_PUBLIC_CPP_SHELL_WINDOW_IDS_H_
 #define ASH_PUBLIC_CPP_SHELL_WINDOW_IDS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
+#include "ash/public/cpp/ash_public_export.h"
+
 // Declarations of ids of special shell windows.
 
 namespace ash {
 
 // Used to indicate no shell window id.
 const int32_t kShellWindowId_Invalid = -1;
 
 // A higher-level container that holds all of the containers stacked below
 // kShellWindowId_LockScreenContainer.  Only used by PowerButtonController for
 // animating lower-level containers.
@@ skipping 83 matching lines @@
 const int32_t kShellWindowId_MouseCursorContainer = 24;
 
 // The topmost container, used for power off animation.
 const int32_t kShellWindowId_PowerButtonAnimationContainer = 25;
 
 const int32_t kShellWindowId_Min = 0;
 const int32_t kShellWindowId_Max = kShellWindowId_PowerButtonAnimationContainer;
 
 // These are the list of container ids of containers which may contain windows
 // that need to be activated.
-extern const int32_t kActivatableShellWindowIds[];
-extern const size_t kNumActivatableShellWindowIds;
+ASH_PUBLIC_EXPORT extern const int32_t kActivatableShellWindowIds[];
+ASH_PUBLIC_EXPORT extern const size_t kNumActivatableShellWindowIds;
 
 // Returns true if |id| is in |kActivatableShellWindowIds|.
-bool IsActivatableShellWindowId(int32_t id);
+ASH_PUBLIC_EXPORT bool IsActivatableShellWindowId(int32_t id);
 
 }  // namespace ash
 
 #endif  // ASH_PUBLIC_CPP_SHELL_WINDOW_IDS_H_