Removes/promotes functions from WmWindowMus to WmWindowAura

ash/wm/window_properties.h

Index: ash/wm/window_properties.h
diff --git a/ash/wm/window_properties.h b/ash/wm/window_properties.h
index 3ec15c05c9b5d2401fbd09001c6d2428a7cc89ec..e4cf4dbf13bdb7a55b21adc5fb8d1e602c573333 100644
--- a/ash/wm/window_properties.h
+++ b/ash/wm/window_properties.h
@@ -22,6 +22,22 @@ namespace wm {
 class WindowState;
 }  // namespace wm
 
+// Used with kWidgetCreationType to indicate source of the widget creation.
+enum class WidgetCreationType {
+  // The widget was created internally, and not at the request of a client.
+  // For example, overview mode creates a number of widgets. These widgets are
+  // created with a type of INTERNAL. This is the default.
+  INTERNAL,
+
+  // The widget was created for a client. In other words there is a client
+  // embedded in the aura::Window. For example, when Chrome creates a new
+  // browser window the window manager is asked to create the aura::Window.
+  // The window manager creates an aura::Window and a views::Widget to show
+  // the non-client frame decorations. In this case the creation type is
+  // FOR_CLIENT.
+  FOR_CLIENT,
+};
+
 // Shell-specific window property keys; some keys are exported for use in tests.
 
 // Alphabetical sort.
@@ -58,6 +74,9 @@ extern const aura::WindowProperty<bool>* const kSnapChildrenToPixelBoundary;
 // Property to tell if the container uses the screen coordinates.
 extern const aura::WindowProperty<bool>* const kUsesScreenCoordinatesKey;
 
+ASH_EXPORT extern const aura::WindowProperty<WidgetCreationType>* const
+    kWidgetCreationTypeKey;
+
 // A property key to store WindowState in the window. The window state
 // is owned by the window.
 extern const aura::WindowProperty<wm::WindowState*>* const kWindowStateKey;