Removes/promotes functions from WmWindowMus to WmWindowAura

ash/wm/window_properties.cc

Index: ash/wm/window_properties.cc
diff --git a/ash/wm/window_properties.cc b/ash/wm/window_properties.cc
index acc7202686f3a0b654ff5edcec6b9b87cef5b38d..e4d4c3e4b5151843c1dce4fc0cf93983b1e2d3bb 100644
--- a/ash/wm/window_properties.cc
+++ b/ash/wm/window_properties.cc
@@ -8,6 +8,7 @@
 #include "ui/aura/window_property.h"
 
 DECLARE_WINDOW_PROPERTY_TYPE(ash::wm::WindowState*);
+DECLARE_EXPORTED_WINDOW_PROPERTY_TYPE(ASH_EXPORT, ash::WidgetCreationType);
 
 namespace ash {
 
@@ -29,6 +30,10 @@ DEFINE_WINDOW_PROPERTY_KEY(bool, kSnapChildrenToPixelBoundary, false);
 
 DEFINE_WINDOW_PROPERTY_KEY(bool, kUsesScreenCoordinatesKey, false);
 
+DEFINE_WINDOW_PROPERTY_KEY(WidgetCreationType,
+                           kWidgetCreationTypeKey,
+                           WidgetCreationType::INTERNAL);
+
 DEFINE_OWNED_WINDOW_PROPERTY_KEY(wm::WindowState, kWindowStateKey, NULL);
 
 }  // namespace ash