Removed child windows from WindowToken window list

With the window container hierarchy model, containers should only
link to their direct children and delegate any operation on
decendants of their children to their children.

Bug: 30060889
Change-Id: I99ca0d181d54cfe75bbe24c1b0daaa06cf7cfd9a
diff --git a/services/core/java/com/android/server/wm/Session.java b/services/core/java/com/android/server/wm/Session.java
index cb99461..e9ce0ea 100644
--- a/services/core/java/com/android/server/wm/Session.java
+++ b/services/core/java/com/android/server/wm/Session.java
@@ -202,7 +202,7 @@
 
     @Override
     public void prepareToReplaceWindows(IBinder appToken, boolean childrenOnly) {
-        mService.setReplacingWindows(appToken, childrenOnly);
+        mService.setWillReplaceWindows(appToken, childrenOnly);
     }
 
     public int relayout(IWindow window, int seq, WindowManager.LayoutParams attrs,