[mus+ash] Removes WmWindow from ash (app_list, frame, metrics, session, system, wallpaper)

ash/wm/window_util.h

Index: ash/wm/window_util.h
diff --git a/ash/wm/window_util.h b/ash/wm/window_util.h
index d3fcf3d5ba078d0fca0b54c1c9f8e39a3a0b479f..e4e2e6ec0b4aca7a19d4c7e0f354fa3521f6c5e9 100644
--- a/ash/wm/window_util.h
+++ b/ash/wm/window_util.h
@@ -25,6 +25,9 @@ class EventHandler;
 }
 
 namespace ash {
+
+class ImmersiveFullscreenController;
+
 namespace wm {
 
 // Utility functions for window activation.
@@ -99,6 +102,12 @@ ASH_EXPORT void RemoveLimitedPreTargetHandlerForWindow(
     ui::EventHandler* handler,
     aura::Window* window);
 
+// Installs a resize handler on the window that makes it easier to resize
+// the window. See ResizeHandleWindowTargeter for the specifics.
+ASH_EXPORT void InstallResizeHandleWindowTargeterForWindow(
+    aura::Window* window,
+    ImmersiveFullscreenController* immersive_fullscreen_controller);
+
 }  // namespace wm
 }  // namespace ash