Merge "Revert creation of home stack from WindowState#getRootTask()."
diff --git a/services/core/java/com/android/server/wm/WindowState.java b/services/core/java/com/android/server/wm/WindowState.java
index 78d6b9631..1cfd0d4 100644
--- a/services/core/java/com/android/server/wm/WindowState.java
+++ b/services/core/java/com/android/server/wm/WindowState.java
@@ -1513,8 +1513,7 @@
         // Some system windows (e.g. "Power off" dialog) don't have a task, but we would still
         // associate them with some stack to enable dimming.
         final DisplayContent dc = getDisplayContent();
-        return mAttrs.type >= FIRST_SYSTEM_WINDOW && dc != null
-                ? dc.getOrCreateRootHomeTask() : null;
+        return mAttrs.type >= FIRST_SYSTEM_WINDOW && dc != null ? dc.getRootHomeTask() : null;
     }
 
     /**