mash: improves browser frame decorations

ash/mus/property_util.h

Index: ash/mus/property_util.h
diff --git a/ash/mus/property_util.h b/ash/mus/property_util.h
index 5078b463ad454b026d8f7fdbf281262c61de5901..2fd6206c08dfae719ccd5d49461733b8adf54fff 100644
--- a/ash/mus/property_util.h
+++ b/ash/mus/property_util.h
@@ -28,6 +28,10 @@ enum class WindowType;
 }
 
 namespace ash {
+namespace mojom {
+enum class WindowStyle;
+}
+
 namespace mus {
 
 // Functions for extracting properties that are used at a Window creation time.
@@ -59,6 +63,8 @@ bool ShouldRemoveStandardFrame(const InitProperties& properties);
 
 bool ShouldEnableImmersive(const InitProperties& properties);
 
+mojom::WindowStyle GetWindowStyle(const InitProperties& properties);
+
 // Applies |properties| to |window| using |property_converter|.
 void ApplyProperties(
     aura::Window* window,